APA (7th ed.) Citation

Van der Eyken, W. (1969). The pre-school years (Rev. ed.). Penguin.

Chicago Style (17th ed.) Citation

Van der Eyken, Willem. The Pre-school Years. Rev. ed. Harmondsworth: Penguin, 1969.

MLA (9th ed.) Citation

Van der Eyken, Willem. The Pre-school Years. Rev. ed. Penguin, 1969.