Pratt, John W.
Massachusetts Institute of Technology, 1995
Buku Teks SO
Jones, J. Morgan
Richard D. Irwin, 1977
Buku Teks SO
Halter, Albert N., 1927-
South-Western Publishing, 1971
Buku Teks
Thomas, Howard
Pitman, 1972
Buku Teks SO
Moore, Peter G.
Longman , 1972
Buku Teks