Style de citation APA (7e éd.)

Drucker Peter F. (2004). Effective Executive: The Definitive Guide to Getting the Right Things Done. HBR ,Harper Business.

Style de citation Chicago (17e éd.)

Drucker Peter F. Effective Executive: The Definitive Guide to Getting the Right Things Done. UK: HBR ,Harper Business, 2004.

Style de citation MLA (9e éd.)

Drucker Peter F. Effective Executive: The Definitive Guide to Getting the Right Things Done. HBR ,Harper Business, 2004.