APA aipamena

Harrity, R. A., & Martin , R. G. (1962). Three lives Helen Keller.

Chicago Style aipamena

Harrity, Richard And, and Ralph G. Martin. Three Lives Helen Keller. 1962.

MLA aipamena

Harrity, Richard And, and Ralph G. Martin. Three Lives Helen Keller. 1962.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.