Grubbs, Robert L.
Gregg shorthand for colleges speed building
McGraw-Hill, 1982
 Buku Teks SO
Leslie, Louis A.
Gregg dictation simplified
McGraw-Hill, 1955
 Buku Teks SO
Dewett, Kewal Krishan
Refresher course in economic theory
Premier Publishing, 1969
 Buku Teks SO
Mirta Hediyati Reksodiputro
Airway problems impact to Children orofacial growth and development (article on 17th Scientific Meeting & Refresher Course in Dentistry KPPIG2016)
2016
 UI - Makalah dan Kertas Kerja
Renshaw, Wallace W.
Gregg dictation and transcription
Gregg Publishing, 1937
 Buku Teks SO