APA (7th ed.) Citation

Bengtsson, A. (1970). Environmental planning for children's play. Lockwood.

Chicago Style (17th ed.) Citation

Bengtsson, Arvid. Environmental Planning for Children's Play. London: Lockwood, 1970.

MLA (9th ed.) Citation

Bengtsson, Arvid. Environmental Planning for Children's Play. Lockwood, 1970.