APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Van der Eyken, Willem. The Pre-school Years. 4.ed. Harmondsworth, Middlesex: Penguin Books, 1977.

MLA (9th ed.) Citation

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