Gross, Martin
Quintessence Publishing, 2015
Buku Teks SO
Thomson, Hamish
Wright , 1990
Buku Teks SO
Bishop, Matt
Addison-Wesley, 2003
Buku Teks SO
Asch, David
Crest Publishing House, 1999
Buku Referensi
Speser, Phyllis L.
John Wiley & Sons, 2006
Buku Teks