Spiegel, Leonard
Regents, 1993
Buku Teks SO
Parker, Harry
John Wiley & Sons, 1983
Buku Teks SO
McCormac, Jack C.
Harper and Row , 1981
Buku Teks SO
McCormac, Jack C.
Pearson Education, 2018
Buku Teks SO
editor, Roger L. Brockenbrough, Frederick S. Maerritt
McGraw-Hill, 1994
Buku Referensi