APA aipamena

Kirn, E. (1989). About the U.S.A. Washington, D.C: United States Department of State.

Chicago Style aipamena

Kirn, Elaine. About the U.S.A. Washington, D.C: United States Department of State, 1989.

MLA aipamena

Kirn, Elaine. About the U.S.A. Washington, D.C: United States Department of State, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.