Steinbeck, John, 1902-1968, author
PT Gramedia Pustaka Utama, 2017
Buku Teks
edited by Penny Kaganoff and Susan Spano
Harcourt Brace & Company, 1997
Buku Teks
Equal Opportunities Commission
Her Majesty's Stationery Office, 1987
Buku Referensi
Faucett, L.W., author
Oxford University Press, 1951
Buku Teks
Duchacek, Ivo D., author
Dryden Press, 1971
Buku Teks