Cita APA (7a ed.)

DRUCKER , P. (1982). THE EFFACTIVE EXECUTIVE. PAN BOOKS.

Cita Chicago Style (17a ed.)

DRUCKER , P.F. THE EFFACTIVE EXECUTIVE. GREAT BRITAIN: PAN BOOKS, 1982.

Cita MLA (9a ed.)

DRUCKER , P.F. THE EFFACTIVE EXECUTIVE. PAN BOOKS, 1982.