Klise, Eugene S.
South-Western College Publishing, 1972
Buku Teks SO
Kent, Raymond P.
Holt, Rinehart & Winston, [Date of publication not identified]
Buku Teks SO
Kreps, Cliften H.
Ronald Press, 1967
Buku Teks SO
Westerfield, Ray B.
Roland Press , 1947
Buku Teks
Miller, Roger LeRoy
McGraw-Hill, 1993
Buku Teks SO