Bahasa Inggris Sistem 52 M Jilid 1

le Herman Sudrajat, Herpinus Simanjuntak
Foilsithe 2004

Practical Daily ; Coversations

le Dhanny R. Cyssco, Herman Sudrajat, Ira Sustafira M.
Foilsithe 2004

Telephone ; English for Special Purposes conversational approach

le Herman Sudrajat, Lanny Kristianto, Sabar Sinulingga, Harry R
Foilsithe 2003

Kamus Pemantapan Bahasa Inggris

le Herman Sudrajat, F.G Son Mila Puspita Arum
Foilsithe 1996

English For Hobbies

le Drs. Fathuddin, S.I.P., Dedeh K, Herman Sudrajat
Foilsithe 2003

Leisure ; English for Special Purposes

le Herman Sudrajat, Dra.Jasmin Nurcahya, A. Heriyanti, Adjie Soeroso
Foilsithe 1996