Terry, Morgan
Pearson, 2007
Buku Teks SO
editors, Junaidi, Elda N. Auliansani, Farah S. Azizah, M. Umar Sadikin
UI Publishing, 2020
Buku Teks
McKenzie, Richard B.
Richard D. Irwin, 1981
Buku Teks SO
Ramsay, James W.
Prentice Hall Regents, 1986
Buku Teks SO
Jordan, R. R.
Longman, 2001
Buku Teks SO