APA Style

Drucker, P, F. (2006-01-03T11:30:45+). The Effective Executive: The Definitive Guide to Getting the Right Things Done (1st Edition). : HarperCollins.

MLA Style

Drucker, Peter, F.. "The Effective Executive: The Definitive Guide to Getting the Right Things Done". 1st Edition : HarperCollins, 2006-01-03T11:30:45+. Book.