Gaya APA

Evans, G, O., Sheals, J, G. (1961). The Terrestrial Acari of The British Isles Volume 1 : Introduction and Biology . London: Trustees of the British Museum.

Gaya MLA

Evans, G., Owen., Sheals, J., G.. "The Terrestrial Acari of The British Isles Volume 1 : Introduction and Biology". London: Trustees of the British Museum, 1961. Text.