Johansen,John H. (1990). American Education: An introduction to teaching (6th ed.). WCB.
Citazione stile Chigago Style (17a edizione)Johansen,John H. American Education: An Introduction to Teaching. 6th ed. U.S.A: WCB, 1990.
Citatione MLA (9a ed.)Johansen,John H. American Education: An Introduction to Teaching. 6th ed. WCB, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.