APA (7th ed.) Citation

Millis, W. A., & Millis, H. H. (1925). The teaching of high school subjects. The Century co..

Chicago Style (17th ed.) Citation

Millis, William Alfred, and Harriet Harding Millis. The Teaching of High School Subjects. New York, London: The Century co., 1925.

MLA (9th ed.) Citation

Millis, William Alfred, and Harriet Harding Millis. The Teaching of High School Subjects. The Century co., 1925.