APA Citatie

Ober Johnson, & Hanson Rice. (2003). Gregg College Keyboarding & Document Processing (GDP), Student Manual, Word 2002. American: McGraw -Hill.

Chicago Style citaat

Ober Johnson, en Hanson Rice. Gregg College Keyboarding & Document Processing (GDP), Student Manual, Word 2002. American: McGraw -Hill, 2003.

MLA citatie

Ober Johnson, en Hanson Rice. Gregg College Keyboarding & Document Processing (GDP), Student Manual, Word 2002. American: McGraw -Hill, 2003.