APA (7th ed.) Zitazioa
Ober, S., Johnson, J. E., Rice, A., & Hanson, R. N. (2003). College Keyboarding & Document Processing: Lessons 1-120 (9th ed.). McGraw-Hill / Irwin.
Chicago Style (17th ed.) Zitazioa
Ober, Scot, Jack E. Johnson, Arlene Rice, eta Robert N. Hanson. College Keyboarding & Document Processing: Lessons 1-120. 9th ed. New York: McGraw-Hill / Irwin, 2003.
MLA (9th ed.) Zitazioa
Ober, Scot, et al. College Keyboarding & Document Processing: Lessons 1-120. 9th ed. McGraw-Hill / Irwin, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.