APA (7th ed.) Citation

Walker, A. (1977). Rudolph Valentino. London: Penguin Books.

Chicago Style (17th ed.) Citation

Walker, Alexander. Rudolph Valentino. London: Penguin Books, 1977.

MLA (8th ed.) Citation

Walker, Alexander. Rudolph Valentino. London: Penguin Books, 1977.

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