Citazione APA

Fry, W. G. (1970). Biology of the porifera: Symposia of the zoological society of London, No.25.

Stile di citazione Chicago

Fry, W G. Biology of the Porifera: Symposia of the Zoological Society of London, No.25. Academic Press , New York, 1970.

Citazione MLA

Fry, W G. Biology of the Porifera: Symposia of the Zoological Society of London, No.25. 1970.