Gaya APA

J.W.Gregory, F, D. (1925). The Menace of Colour . USA amerika: Seeley, Service and Co. Limited.

Gaya MLA

J.W.Gregory, F.R.S.,, D.Sc.. "The Menace of Colour". USA amerika: Seeley, Service and Co. Limited, 1925. Koleksi Elektronik.