APA aipamena

Fletcher, J. (1984). Information Sources (Second Edition). ELSEVIER.

Chicago Style aipamena

Fletcher, John. Information Sources (Second Edition). ELSEVIER, 1984.

MLA aipamena

Fletcher, John. Information Sources (Second Edition). ELSEVIER, 1984.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.