APA

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

Chicago

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

Harvard

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

MLA

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