APA استشهاد

Gray , H. B., & Haight , G. . P. (1967). Basic principes of chemistry. W . A . Benjamin.

استشهاد بنمط شيكاغو

Gray , Harry B., و Gibert P. Haight. Basic Principes of Chemistry. New York: W . A . Benjamin, 1967.

MLA استشهاد

Gray , Harry B., و Gibert P. Haight. Basic Principes of Chemistry. W . A . Benjamin, 1967.