Strommen, Ellen A.
Dorsey Press, 1983
Buku Teks
Lucas, Bill
Nicholas Brealey Publishing, 2002
Buku Teks SO
Foley, Gerald
Yayasan Obor Indonesia , 1993
Buku Teks
Wallace, Harold R.
South-Western Educational, 1995
Buku Teks
Grabe, Shelly
Oxford University Press, 2017
eBooks