APA استشهاد

Hampel, C. A., & Hawley, G. G. (1973). The Encyclopedia of chemistry (3d ed.). Van Nostrand Reinhold.

استشهاد بنمط شيكاغو

Hampel, Clifford A., و Gessner Goodrich Hawley. The Encyclopedia of Chemistry. 3d ed. New York: Van Nostrand Reinhold, 1973.

MLA استشهاد

Hampel, Clifford A., و Gessner Goodrich Hawley. The Encyclopedia of Chemistry. 3d ed. Van Nostrand Reinhold, 1973.