APA (7th ed.) Citation

Felstein, I. (1973). Sex in later life. Penguin.

Chicago Style (17th ed.) Citation

Felstein, Ivor. Sex in Later Life. Harmondsworth: Penguin, 1973.

MLA (8th ed.) Citation

Felstein, Ivor. Sex in Later Life. Penguin, 1973.

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