Cita APA (7a ed.)

Thomas, G. V., & Silk, A. M. J. (1990). An introduction to the psycology of childrens drawings ([1st pub.].). Harvester Wheatsheaf.

Cita Chicago Style (17a ed.)

Thomas, Glyn Vivian, y Angèle Martha Johanna Silk. An Introduction to the Psycology of Childrens Drawings. [1st pub.]. New York [etc.]: Harvester Wheatsheaf, 1990.

Cita MLA (9a ed.)

Thomas, Glyn Vivian, y Angèle Martha Johanna Silk. An Introduction to the Psycology of Childrens Drawings. [1st pub.]. Harvester Wheatsheaf, 1990.