APA

Turner J. R. G., .Little-recognised species of Heliconius butterfly (<Nymphalidae>). : .

Chicago

Turner John R G, .Little-recognised species of Heliconius butterfly (<Nymphalidae>). : .

Harvard

Turner J. R. G., .Little-recognised species of Heliconius butterfly (<Nymphalidae>). : .

MLA

Turner John R G, .: . .