Eckman, Donald P., author
Wiley Eastern, 1958
Buku Teks
Sante, Daniel P., author
Prentice-Hall, 1980
Buku Teks
Weyrick, Robert C., author
McGraw-Hill Kogakusha, 1975
Buku Teks
Smith, Carlos A., author
John Wiley & Sons, 1997
Buku Teks
Gupta, Someshwar C., author
John Wiley & Sons, 1970
Buku Teks