Bullock, R. H. (2005). The Norton Field guide to writing. New York: W.W. Norton & Co.
Chicago Style aipamenaBullock, Richard H. The Norton Field Guide to Writing. New York: W.W. Norton & Co, 2005.
MLA aipamenaBullock, Richard H. The Norton Field Guide to Writing. New York: W.W. Norton & Co, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.