Hetherington, Mavis E., author
McGraw-Hill , 1999
Buku Teks
Hetherington, Mavis E., author
McGraw-Hill, 1986
Buku Teks
Hetherington, Mavis E., author
McGraw-Hill, 1987
Buku Teks
Hetherington, Mavis E., author
McGraw-Hill, 1975
Buku Teks
Cobb, Nancy J., author
Mayfield Publishing Company , 2001
Buku Teks