APA aipamena

Sue Arengo, C. A. (1983). Three Billy Goats.

Chicago Style aipamena

Sue Arengo, Caroline Anstey. Three Billy Goats. 1983.

MLA aipamena

Sue Arengo, Caroline Anstey. Three Billy Goats. 1983.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.