Dean, Alyssa
Gramedia Pustaka Utama, 2005
Buku Teks
Broun, Hob, author
McGraw-Hill, 1987
Buku Teks
Clavell, James, author
Dell Publishing, 1979
Buku Teks
Smith, Betty
Perrenial, 1998
Buku Teks
Derleth, August
Sauk City Stanton and Lee, 1945
Buku Teks