Daniels, Diane
Erlangga, 1995
Buku Teks
Becker, Esther R., author
Harper & Row, 1971
Buku Referensi
Doris, Lillian, author
Prentice-Hall, 1970
Buku Referensi
Ganic, Ejup N., author
McGraw-Hill, 2003
Buku Teks
Mangkoe Atmadja, author
Landsdrukkerij, 1910
Buku Klasik