Ruetten, M. K. (1997). Developing composition skills. Heinle & Heinle Publishers.
Chicago Style aipamenaRuetten, Mary K. Developing Composition Skills. Pacific Grove: Heinle & Heinle Publishers, 1997.
MLA aipamenaRuetten, Mary K. Developing Composition Skills. Heinle & Heinle Publishers, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.