Tohutoro APA (7th ed.)

Richards, W. G. (1986). The problems of chemistry. Oxford University Press, Inc..

Tohutoru Kātū Chicago (17th ed.)

Richards, W. Graham. The Problems of Chemistry. New York: Oxford University Press, Inc., 1986.

Tohutoro MLA (9th ed.)

Richards, W. Graham. The Problems of Chemistry. Oxford University Press, Inc., 1986.