APA (7th ed.) Citation

Emmet, E. R. (1968). Learning to philosophize (Revised ed.). Penguin.

Chicago Style (17th ed.) Citation

Emmet, E. R. Learning to Philosophize. Revised ed. Harmondsworth: Penguin, 1968.

MLA (9th ed.) Citation

Emmet, E. R. Learning to Philosophize. Revised ed. Penguin, 1968.