APA (7e ed.) Bronvermelding

Houston, W. J. B., & Tulley, W. J. (1986). A textbook of orthodontics. Wright.

Chicago (17e ed.) Bronvermelding

Houston, W. J. B., en W. J. Tulley. A Textbook of Orthodontics. Bristol: Wright, 1986.

MLA (9e ed.) Bronvermelding

Houston, W. J. B., en W. J. Tulley. A Textbook of Orthodontics. Wright, 1986.