APA aipamena

Williams, M. (1976). Preface to Hardy. Longman.

Chicago Style aipamena

Williams, Merryn. Preface to Hardy. Longman, 1976.

MLA aipamena

Williams, Merryn. Preface to Hardy. Longman, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.