Aronson, Susan S.
HarperCollins Publisher Inc., 1991
Buku Teks
Robertson, Cathie, 1946-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Hildebrand, Verna, author
1997
Buku Teks
Olds, Anita Rui, author
McGraw-Hill, 2000
Buku Teks
Olds, Anita Rui, author
McGraw-Hill, 2001
Buku Referensi