MLA

Kaplan, Stephen, and Rachel Kaplan. Humanscape : Environments for People. Michigan: Ulrich's Books, 1982.

APA

Kaplan, S., & Kaplan, R. (1982). Humanscape : Environments for people. Michigan: Ulrich's Books.

Chicago

Kaplan, Stephen, and Rachel Kaplan. Humanscape: Environments for People. Michigan: Ulrich's Books, 1982.