Lua APA (7ú heag.)

Johansen,John H. (1990). American Education: An introduction to teaching (6th ed.). WCB.

Lua i Stíl Chicago (17ú heag.)

Johansen,John H. American Education: An Introduction to Teaching. 6th ed. U.S.A: WCB, 1990.

Lua MLA (9ú heag.)

Johansen,John H. American Education: An Introduction to Teaching. 6th ed. WCB, 1990.

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