APA Style

(Editor), P, A, (, A, K. (1975). Heavy Metals in the Aquatic Environment: An International Conference (1st). Oxford; New York (also listed:: Pergamon Press.

MLA Style

(Editor), Peter, A., (P., A.), Krenkel. "Heavy Metals in the Aquatic Environment: An International Conference". 1st Oxford; New York (also listed:: Pergamon Press, 1975. BOOK.