Nespeca, Sue McCleaf

[American Library association, ], 2003

 eBooks

Lambert, Stephen E.

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

 Buku Teks

Bajpai, Avi C.

John Wiley & Sons, 1983

 Buku Teks

Slavin, Steve

John Wiley & Sons, 2007

 Buku Teks

Wang, Susheng. author

World Scientific , 2015

 Buku Teks