APA

Richards O. W. D. R. G., . (1977). IMMS general textbook of entomology, Vol.2: Classification and biology. : Chapman & Hall Ltd., London.

Chicago

Richards O W Davies R G, . 1977. IMMS general textbook of entomology, Vol.2: Classification and biology. : Chapman & Hall Ltd., London.

Harvard

Richards O. W. D. R. G., . (1977). IMMS general textbook of entomology, Vol.2: Classification and biology. : Chapman & Hall Ltd., London.

MLA

Richards O W Davies R G, . IMMS general textbook of entomology, Vol.2: Classification and biology. : Chapman & Hall Ltd., London. 1977.