Cita APA

Wells, H., & Wells, P. H. (1956). General biology. New York: McGraw-Hill.

Citación estilo Chicago

Wells, Harrington, y Patrick H. Wells. General Biology. New York: McGraw-Hill, 1956.

Cita MLA

Wells, Harrington, y Patrick H. Wells. General Biology. New York: McGraw-Hill, 1956.