APA (7th ed.) Citation

Calkins, M. W. (1910). A first book in psychology. Macmillan.

Chicago Style (17th ed.) Citation

Calkins, Mary Whiton. A First Book in Psychology. New York: Macmillan, 1910.

MLA (9th ed.) Citation

Calkins, Mary Whiton. A First Book in Psychology. Macmillan, 1910.