APA (7th ed.) Citation

Warmke, R. F., & Wyllie, E. D. (1977). Consumer Economic Problems (9th ed.). South-Western Publishing.

Chicago Style (17th ed.) Citation

Warmke, Roman F., and Eugene D. Wyllie. Consumer Economic Problems. 9th ed. Cincinnati: South-Western Publishing, 1977.

MLA (9th ed.) Citation

Warmke, Roman F., and Eugene D. Wyllie. Consumer Economic Problems. 9th ed. South-Western Publishing, 1977.