APA aipamena

Sulzby, E. (1990). McGraw-Hill English. New York: McGraw-Hill School Division.

Chicago Style aipamena

Sulzby, Elizabeth. McGraw-Hill English. New York: McGraw-Hill School Division, 1990.

MLA aipamena

Sulzby, Elizabeth. McGraw-Hill English. New York: McGraw-Hill School Division, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.