Cita APA (7a ed.)

Ward, C., & Golzen, A. (1979). The child in the city. Penguin.

Cita Chicago Style (17a ed.)

Ward, Colin, y Ann Golzen. The Child in the City. Harmondsworth: Penguin, 1979.

Cita MLA (9a ed.)

Ward, Colin, y Ann Golzen. The Child in the City. Penguin, 1979.