Belk, Collen
Pearson - Benjamin Cummings, 2008
Buku Teks
Presson, Joelle, author
McGraw-Hill, 2008
Buku Teks
Belk, Collen, author
Pearson Prentice Hall, 2007
Multimedia
Cecie Starr ... [et al.]
Thomson, Brooks/Cole, 2006
Buku Teks
Nason, Alvin, author
John Wiley & Sons, 1965
Buku Teks