APA (7th ed.) Citation

Lucas, J., & McKennell, V. (1974). The Penguin book of playgroups. Penguin Books.

Chicago Style (17th ed.) Citation

Lucas, Joyce, and Vivienne McKennell. The Penguin Book of Playgroups. Harmondsworth ; Baltimore: Penguin Books, 1974.

MLA (8th ed.) Citation

Lucas, Joyce, and Vivienne McKennell. The Penguin Book of Playgroups. Penguin Books, 1974.