Gaya APA

THOMAS, G, V., SILK, A, M. (1990). An introduction to the psychology of children's drawings . New York: Harvester Wheatcheaf.

Gaya MLA

THOMAS, Glyn, V.., SILK, Angele, M.J.. "An introduction to the psychology of children's drawings". New York: Harvester Wheatcheaf, 1990. Buku.