APA (7th ed.) Citation

Mathias, B., & Thomson, R. (1990). Christmas. Watts.

Chicago Style (17th ed.) Citation

Mathias, Beverley, and Ruth Thomson. Christmas. London, New York, Sydney, Toronto: Watts, 1990.

MLA (9th ed.) Citation

Mathias, Beverley, and Ruth Thomson. Christmas. Watts, 1990.