APA aipamena

Enger, F. (1957). Letters for special occasions. Mc Graw Hill.

Chicago Style aipamena

Enger, Frank. Letters for Special Occasions. New York: Mc Graw Hill, 1957.

MLA aipamena

Enger, Frank. Letters for Special Occasions. Mc Graw Hill, 1957.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.