Koprowska, Juliet, author
Learning Matters, 2008
Buku Teks
Koprowska, Juliet, author
Learning, Matters, 2005
Buku Teks
Koprowska, Juliet, author
Learning Matters, 2007
Buku Teks
Cournoyer, Barry R., author
Brooks/Cole Cengage Learning, 2011
Buku Teks
Guirdham, Maureen, author
Prentice-Hall, 1996
Buku Teks