APA (7th ed.) Citation

Van der Eyken, W. (1977). The pre-school years (4th ed.). Penguin.

Chicago Style (17th ed.) Citation

Van der Eyken, Willem. The Pre-school Years. 4th ed. Harmondsworth ; New York: Penguin, 1977.

MLA (8th ed.) Citation

Van der Eyken, Willem. The Pre-school Years. 4th ed. Penguin, 1977.