Bailey, E. P., & Powell, P. A. (1995). The practical writer (6th ed.). Harcourt Brace College Publishers.
Chicago Style aipamenaBailey, Edward P., and Philip A. Powell. The Practical Writer. 6th ed. Forth Worth, Tex: Harcourt Brace College Publishers, 1995.
MLA aipamenaBailey, Edward P., and Philip A. Powell. The Practical Writer. 6th ed. Harcourt Brace College Publishers, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.