Russell, R. (1971). Prince of darkness. Sphere.
Cita Chicago (17th ed.)Russell, Ray. Prince of Darkness. London: Sphere, 1971.
Cita MLA (8th ed.)Russell, Ray. Prince of Darkness. Sphere, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)