Metford, J.C.J., author
Thames and Hudson, 1983
Buku Referensi
White, Ellen G., author
Indonesia Publishing House, 2009
Buku Teks
Peel, Robert
Henry Holt and Company, 1958
Buku Teks
J. Soedjati Djiwandono, author
Kanisius, 1999
Buku Teks
Pustaka Percik, 2003
Buku Teks