Devine, Donald F.
John Wiley & Sons, 1983
Buku Teks SO
Garstens, Helen L.
Macmillan, 1969
Buku Teks SO
Beckmann, Sybilla
Pearson/Addison-Wesley, 2008
Buku Teks SO
Phares Odaffer, Randall Charles, Thomas Cooney, John Dossey, Jane Schielack
Pearson/Addison-Wesley, 2008
Buku Teks SO
Krause, Eugene F.
Prentice-Hall, 1978
Buku Teks SO