Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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