 | Land Surveyor Reference Manual by Andrew L. Harbin |
 | The Gregg Reference Manual College Textbook |
 | The Gregg Reference Manual: Worksheets on Grammar, Usage, and Style by William A. Sabin |
 | Gregg Reference Manual by William A. Sabin |
 | The Gregg Reference Manual: A Manual of Style, Grammar, Usage, and Formatting by William A. Sabin |
 | Comprehensive Worksheets to Accompany the Gregg Reference Manual by William E. Sabin |
 | Basic Worksheets to Accompany the Gregg Reference Manual by William E. Sabin |
 | The Gregg Reference Manual/Indexed by William Sabin |
| | The Gregg Reference Manual / William A. |
| | Microsoft Word 2000 Manual for Gregg College Keyboarding & Document Processing by Jack E. Johnson, Scot Ober, Arlene Zimmerly |