APA (7th ed.) Citation

Van der Eyken, W. (1969). The pre-school years / by W. van der Eyken (2nd ed.). Penguin.

Chicago Style (17th ed.) Citation

Van der Eyken, Willem. The Pre-school Years / by W. Van Der Eyken. 2nd ed. Penguin, 1969.

MLA (9th ed.) Citation

Van der Eyken, Willem. The Pre-school Years / by W. Van Der Eyken. 2nd ed. Penguin, 1969.

Warning: These citations may not always be 100% accurate.