APA (7th ed.) Zitazioa
Kerrigan, W. J. (1974). Writing to the point: Six basic steps. HBJ.
Chicago Style (17th ed.) Zitazioa
Kerrigan, William J. Writing to the Point: Six Basic Steps. New York: HBJ, 1974.
MLA (9th ed.) Zitazioa
Kerrigan, William J. Writing to the Point: Six Basic Steps. HBJ, 1974.
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