Gaya APA

Pa, T., Dj., S. (1979). Biogeochemical Cycling of Mineral Forming Elements. . Amsterdam: Elsevier Scientific Pub. Co..

Gaya MLA

Pa, Trudinger., Dj., Swaine. "Biogeochemical Cycling of Mineral Forming Elements.". Amsterdam: Elsevier Scientific Pub. Co., 1979. Text.