Cita APA

Lugard, F. J. D., Stoddard, L., Graham, S., Moton, R. R., Johnston, H. H., Du Bois, W. E. B., . . . Adam Matthew Digital. (1921). The colour problem. Adam Matthew Digital.

Citación estilo Chicago

Lugard, Frederick John Dealtry, Lothrop Stoddard, Stephen Graham, Robert Russa Moton, Harry Hamilton Johnston, William E. B. Du Bois, Cambridge University Library, y Adam Matthew Digital. The Colour Problem. Marlborough, England: Adam Matthew Digital, 1921.

Cita MLA

Lugard, Frederick John Dealtry, et al. The Colour Problem. Adam Matthew Digital, 1921.