APA (7. basım) Alıntı

Warmke, R. F. Consumer economic problems (8th ed.). South-Western Pub.

Chicago Style (17. basım) Atıf

Warmke, Roman F. Consumer Economic Problems. 8th ed. Cincinnati: South-Western Pub.

MLA (9th ed.) Atıf

Warmke, Roman F. Consumer Economic Problems. 8th ed. South-Western Pub.