The Hwee Hwee, author
Butterworth, 2000
Buku Teks
Corey, Marianne Schneider, author
Thomson/Brooks/Cole, 2006
Buku Teks
Waldman, Don E., author
Pearson, 2007
Buku Teks
Lachman, Leon, author
Lea & Febiger, 1976
Buku Teks
Minshull, Roger
Hutchinson University Library, 1971
Buku Teks