APA (7th ed.) Citation

Castle, E. B. (1968). A parents' guide to education. Penguin Books.

Chicago Style (17th ed.) Citation

Castle, E. B. A Parents' Guide to Education. Harmondsworth, Middlesex [u.a.]: Penguin Books, 1968.

MLA (9th ed.) Citation

Castle, E. B. A Parents' Guide to Education. Penguin Books, 1968.