APA (7th ed.) Citation

Cummings, G. (1973). The complete guide to investment (6th ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Cummings, Gordon. The Complete Guide to Investment. 6th ed. Harmondsworth: Penguin Books, 1973.

MLA (8th ed.) Citation

Cummings, Gordon. The Complete Guide to Investment. 6th ed. Penguin Books, 1973.

Warning: These citations may not always be 100% accurate.