APA (7th ed.) Citation

Felstein, I. (1969). Later life: Geriatrics today and tomorrow. Penguin Books.

Chicago Style (17th ed.) Citation

Felstein, Ivor. Later Life: Geriatrics Today and Tomorrow. Harmondsworth: Penguin Books, 1969.

MLA (9th ed.) Citation

Felstein, Ivor. Later Life: Geriatrics Today and Tomorrow. Penguin Books, 1969.

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