Dyfyniad APA

Ober Scot, E.Johnson Jack, Rice Arlene, & N.Hanson Robert. (2002). Gregg College Keyboarding & Document Processing (GDP), Lessons 1-60, Student Text (Gregg College Keyboarding & Document Processing for Windows) (Paperback). American: McGraw Hill/Irwin.

Dyfyniad Arddull Chicago

Ober Scot, E.Johnson Jack, Rice Arlene, và N.Hanson Robert. Gregg College Keyboarding & Document Processing (GDP), Lessons 1-60, Student Text (Gregg College Keyboarding & Document Processing for Windows) (Paperback). American: McGraw Hill/Irwin, 2002.

Dyfyniad MLA

Ober Scot, E.Johnson Jack, Rice Arlene, và N.Hanson Robert. Gregg College Keyboarding & Document Processing (GDP), Lessons 1-60, Student Text (Gregg College Keyboarding & Document Processing for Windows) (Paperback). American: McGraw Hill/Irwin, 2002.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.