APA aipamena

Firth, R. (1958). Human types. N.Y.: New American Library.

Chicago Style aipamena

Firth, Raymond. Human Types. N.Y.: New American Library, 1958.

MLA aipamena

Firth, Raymond. Human Types. N.Y.: New American Library, 1958.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.