Heffernan, James A. W.
Writing: a college handbook
W.W. Norton & Company, 1990
 Buku Referensi
Heffernan, James A.W.
Writing : a college handbook
W.W. Norton & Company, 1986
 Buku Referensi
Heffernan, James A.W.
Writing: a college handbook / James A.W. Heffernan, John E. Lincoln
W.W. Norton & Company, 1986
 Buku Teks SO
Langan, John, 1942-
College writing skills and college writing skills with readings
McGraw-Hill , 2001
 Multimedia
Langan, John, 1942-
College writing skills and college writing skills with readings
MCGraw-Hill, 2001
 Multimedia