Ward, Brice, author
Blue Ridge Summit TAB Books , 1971
Buku Teks
Stapleton, Gerald F., author
Tab Books, 1971
Buku Referensi
Farrell, Joyce, author
Course Technology Cengage Learning, 2013
Buku Teks
Farrell, Joyce, author
Course Technology Cengage Learning, 2013
Buku Teks
Shiffman, Daniel, author
Morgan Kaufmann Publisher, 2008
Buku Teks