APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

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