Hardy, Ronald
New York Doubleday & Company Inc 1958
Buku Teks
Scott, E Evelyn
New York T Seltzer 1923
Buku Teks
Stamper, J.B.
New York Scholastic 1991
Buku Teks
Jakes, John
New York Pyramid Books 1976
Buku Teks
Steel, Danielle, author
Jakarta Gramedia Pustaka Utama 1995
Buku Teks