APA (7. basım) Alıntı

Hopson, B. (1994). Twelve steps to success through service. Excel.

Chicago Style (17. basım) Atıf

Hopson, Barrie. Twelve Steps to Success Through Service. New Delhi: Excel, 1994.

MLA (9th ed.) Atıf

Hopson, Barrie. Twelve Steps to Success Through Service. Excel, 1994.