Miller, Barbara D., author
Pearson Education, 2005
Buku Teks
Hammond, Peter, author
Macmillan, 1978
Buku Teks
Haviland, William A., author
Rinehart and Winston, 1975
Buku Teks
Harris, Marvin, 1927-2001, author
Harper Collins , 1991
Buku Teks
Nanda, Serena
Wadsworth, 1994
Buku Teks