APA (7th ed.) Zitazioa
Purser, J. T. An Approach to literature.
Chicago Style (17th ed.) Zitazioa
Purser, John Thibaut. An Approach to Literature.
MLA (9th ed.) Zitazioa
Purser, John Thibaut. An Approach to Literature.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.