Leslie, Louis A.
Gregg dictation simplified
McGraw-Hill, 1955
 Buku Teks SO
Wajnryb, Ruth
Grammar dictation
Oxford University Press, 1990
 Buku Teks SO
Davis, Paul
Dictation: new methods, new possibilities
Cambridge University Press, 1994
 Buku Teks SO
Gregg, Donald C.
College chemistry/ Donald C. Gregg
Allyn and Bacon, 1961
 Buku Teks SO
Grubbs, Robert L.
Gregg shorthand for colleges speed building
McGraw-Hill, 1982
 Buku Teks SO