APA aipamena

Purdy, J. (1961). Colour of darkness. Secker & Warburg.

Chicago Style aipamena

Purdy, James. Colour of Darkness. Lond.: Secker & Warburg, 1961.

MLA aipamena

Purdy, James. Colour of Darkness. Secker & Warburg, 1961.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.