Citazione Stile APA (7a Edizione)

Johnson, E. A., & Michael, R. E. (1958). Principles of teaching. Allyn and Bacon.

Citazione stile Chigago Style (17a edizione)

Johnson, Earl A., e Ruby Eldon Michael. Principles of Teaching. Boston: Allyn and Bacon, 1958.

Citatione MLA (8a ed.)

Johnson, Earl A., e Ruby Eldon Michael. Principles of Teaching. Allyn and Bacon, 1958.