Narang, B.S.
New Delhi: CBS, 1982
Buku Teks
Van Vlack, Lawrence H., author
Addison-Wesley, 1982
Buku Teks
Steeds, W.
Longman, 1964
Buku Teks
Henkel, Daniel P., author
McGraw-Hill, Higher Education, 2002
Buku Teks
Keyser, Carl A.
Prentice-Hall, 1956
Buku Teks