APA aipamena

Spring, J. (2002). American education. New york: McGraw-Hill.

Chicago Style aipamena

Spring, Joel. American Education. New york: McGraw-Hill, 2002.

MLA aipamena

Spring, Joel. American Education. New york: McGraw-Hill, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.