(1) Summarizing Knowledge
(Encyclopedic Articles, Textbooks & Histories, Handbooks, Research Reviews)

Encyclopedias
Encyclopedia of Management 0787630659
Encyclopedia of Leadership: Practical Guide to Popular Leadership Theories and Techniques

Textbooks & Histories
American Business Leaders: From Colonial Times to the Present 1576070026
Field Guide To Academic Leadership 0787960594

Handbooks
AMA Management Handbook 0814401058
New handbook of organizational communication : advances in theory, research, and methods 0803955030
Leader's change handbook: an essential guide to setting direction and taking action 0787943517

Research Reviews
Women in corporate leadership :reviewing a decade's research  (no ISBN)
 

(2) Selective Bibliography
(Research & Subject Guides, Selective & Didactic Bibliographies, Subject Directories)

Research & Subject Guides
Doing Research in Business and Management : an Introduction to Process and Method
Univerity of Alberta: Research Guides: Business: Management and Organizational Theory
Case Western Reserve Library
Harvard Libraries: Business and Management Resources
LSU Libraries: Management
Ohio State Library: Business

(3) New Information
(Most frequently cited journals, electronic texts, government information, books & monographs, news & newspapers, article databases)

Journals (most frequently cited)
Leadership Quarterly
Journal of Leadership Studies
Academy of Management Journal
Harvard Business Review
Organizational Behavior & Human Decision Processes
Journal of Leadership and Organizational Studies
Strategy & Leadership
Journal of Organizational Behavior
Leadership

Electronic Texts
American City Business Journals 

Government Information
US Army Research Institute for Behavioral and Social Sciences

Business Statistics of the United States

US Office of Personnel Management: Salaries & Wages

Monographs & Books
Crisis Leadership: Planning for the Unthinkable 0471229180

Innovation through learning : what leaders need to know in the 21st century 0878755381

On the Nature of Leadership 0761824529

Shared leadership : reframing the hows and whys of leadership 0761926232

News & Newspapers
 

Article Databases
Business Source Elite

ABI/Inform

Abstracts & Indexes
Personnel Research Abstracts 087546050X

Comprehensive, Recurrent Bibliographies

Library & Book Catalogs, Archives

Search Engines
The BizTech Network
CEOExpress
Business.com:Management
Argus Clearinghouse
 

(5) Reference Resources, Facts & Data
(Almanacs, Biographical Sources, Dictionaries , Directories, Grants & Scholarships, Job Resources, Statistical Resources)

Almanacs
Information Please Almanac

Biographical Sources
Biographical Dictionary of Management 1855068710
Lives the Biography Resource

Data Collections

Dictionaries
Blackwell Encyclopedic Dictionary of Organizational Behavior 0631187812
Concise Dictionary of Business Management 0415188660
African-American Business Leaders: a biographical dictionary
Dictionary of Professional Management

Directories --  Associations, Organizations & Societies
Directory of Business Information Resources 92038430
Business Organizations, Agencies, and Publications Directory

Directories --  Companies, Vendors, etc.

Directories --  Discussion Groups

Directories --  Research Centers & Institutes
Center For Leadership Studies
Leadership Directories

Grants & Scholarships

Job Resources

Statistical Resources