Armawi K. Mundit
Armico, 1986
Buku Teks SO
Dixon, Charles
John Wiley & Sons, 1981
Buku Teks SO
Buck, R. Creighton
McGraw-Hill, 1978
Buku Teks SO
Buck, R. Creighton
McGraw-Hill, 1965
Buku Teks SO
Fulks, Watson
John Wiley & Sons, Inc., 1978
Buku Teks SO