APA-viite (7. p.)

DRUCKER PETER F. (2010). CHANGING WORLD OF THE EXECUTIVE. HARVARD BUSINESS.

Chicago-viite (17. p.)

DRUCKER PETER F. CHANGING WORLD OF THE EXECUTIVE. BOSTON: HARVARD BUSINESS, 2010.

MLA-viite (9. p.)

DRUCKER PETER F. CHANGING WORLD OF THE EXECUTIVE. HARVARD BUSINESS, 2010.