Micklo, Stephen J., author

Jossey-Bass, 2004

 Buku Teks

Nespeca, Sue McCleaf, author

[American Library association, ], 2003

 eBooks

Lambert, Stephen E.

VGM Career Horizons Illinois: VGM Career Horizon, 1999, 1998

 Buku Teks

Bajpai, Avi C., author

John Wiley & Sons, 1983

 Buku Teks

Slavin, Steve, author

John Wiley & Sons, 2007

 Buku Teks