Gould, Jay R., author
VGM Career Horizons, 1994
Buku Teks
Van Duyn, Julia, author
John Wiley & Sons, 1982
Buku Teks
Van Duyn, Julia, author
John Wiley & Sons, 1982
Buku Referensi
Paradis, Adrian A., author
VGM Career Books, 2001
Buku Teks
Bekken, Bonnie Bjorguine, author
VGM Career Books, 2001
Buku Teks