APA (7. basım) Alıntı

Courtney Hugh. (2001). 20/20 Foresight. Harvard Business.

Chicago Style (17. basım) Atıf

Courtney Hugh. 20/20 Foresight. Boston: Harvard Business, 2001.

MLA (9th ed.) Atıf

Courtney Hugh. 20/20 Foresight. Harvard Business, 2001.