MLA

Thomas, Frank C, Charles Edward Spearman, and Elsa Waters. Ability and Knowledge : the Standpoint of the London School. London: Macmillan, 1935.

APA

Thomas, F. C, Spearman, C. Edward, & Waters, E. (1935). Ability and knowledge : the standpoint of the London school. London: Macmillan.

Chicago

Thomas, Frank C., Charles Edward Spearman, and Elsa Waters. Ability and Knowledge: The Standpoint of the London School. London: Macmillan, 1935.