APA (7th ed.) Citation

Skemp, R. R. (1971). The psychology of learning mathematics / (by) Richard R. Skemp. Penguin.

Chicago Style (17th ed.) Citation

Skemp, Richard R. The Psychology of Learning Mathematics / (by) Richard R. Skemp. Harmondsworth: Penguin, 1971.

MLA (9th ed.) Citation

Skemp, Richard R. The Psychology of Learning Mathematics / (by) Richard R. Skemp. Penguin, 1971.

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