APA (7th ed.) Citation

Mittler, P. (1971). The study of twins (1. publ.). Penguin Books.

Chicago Style (17th ed.) Citation

Mittler, Peter. The Study of Twins. 1. publ. Harmondsworth: Penguin Books, 1971.

MLA (9th ed.) Citation

Mittler, Peter. The Study of Twins. 1. publ. Penguin Books, 1971.

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