Wilson, Holly Skodol, author
Addison-Wesley, 1985
Buku Teks
Best, John W.
Pearson, 2014
Buku Teks
Best, John W., author
Prentice Hall of India, 1982
Buku Teks
Estolas, Josefina V., author
Miranda, 1973
Buku Teks
Riley, Matilda White
Harcourt, Brace and world, 1963
Buku Teks