APA aipamena

Villegas, E. M. (1970). Negative judgements.

Chicago Style aipamena

Villegas, Edberto Malvar. Negative Judgements. 1970.

MLA aipamena

Villegas, Edberto Malvar. Negative Judgements. 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.