Smith, Betty
Perrenial, 1998
Buku Teks
Wharton, Edith, author
Everyman, 1993
Buku Teks
Kirby, David K., author
Gale Research, 1975
Buku Referensi
Sheldon, Sidney, author
Gramedia Pustaka Utama, 1991
Buku Teks
Conroy, Pat, author
Gramedia Pustaka Utama, 1996
Buku Teks