APA

Marshall A. J. E. e. a., . (1972). Textbook of zoology invertebrates, Vol.01. : CBS Publishers & Distributors, New Delhi.

Chicago

Marshall A J Ed et al, . 1972. Textbook of zoology invertebrates, Vol.01. : CBS Publishers & Distributors, New Delhi.

Harvard

Marshall A. J. E. e. a., . (1972). Textbook of zoology invertebrates, Vol.01. : CBS Publishers & Distributors, New Delhi.

MLA

Marshall A J Ed et al, . Textbook of zoology invertebrates, Vol.01. : CBS Publishers & Distributors, New Delhi. 1972.