APA (7th ed.) Citation

Day, J. H. (1967). A monograph on the polychaeta of southern Africa.

Chicago Style (17th ed.) Citation

Day, John H. A Monograph on the Polychaeta of Southern Africa. London, 1967.

MLA (9th ed.) Citation

Day, John H. A Monograph on the Polychaeta of Southern Africa. 1967.

Warning: These citations may not always be 100% accurate.