APA استشهاد

Evans, I. (1972). Rocks, minerals and gemstones. Hamlyn.

استشهاد بنمط شيكاغو

Evans, I.O. Rocks, Minerals and Gemstones. London: Hamlyn, 1972.

MLA استشهاد

Evans, I.O. Rocks, Minerals and Gemstones. Hamlyn, 1972.