McCormac, Jack C.
Intenational Textbook, 1966
Buku Teks
Laursen, Harold I.
McGraw-Hill Kogakusha, Ltd., 1969
Buku Teks
Nolan, Barry
Pearson Education , 2006
Multimedia
Hasudungan, Maurice F.
1996
UI - Skripsi (Membership)
Ketter, Robert L.
McGraw-Hill, 1979
Buku Teks