APA
Marshall A. J., Williams W. D. j. a. & Parker T. J. (1972). Textbook of zoology. London: Macmillan.
Chicago
Marshall Alan John, Williams William David jt author and Parker Thomas Jeffery. 1972. Textbook of zoology. London: Macmillan.
Harvard
Marshall A. J., Williams W. D. j. a. and Parker T. J. (1972). Textbook of zoology. London: Macmillan.
MLA
Marshall Alan John, Williams William David jt author and Parker Thomas Jeffery. Textbook of zoology. London: Macmillan. 1972.