Jordan, R. Furneaux
Thames, [Date of publication not identified]
Buku Teks
Risebero, Bill
MIT Press, 2001
Buku Teks
Gloag, John
George Allen & Unwin, [1958]
Buku Teks
edited by Dan Cruickshank
Watson-Guptill Publications, 2000
Buku Teks
Hoag, John D.
George Braziller, 1963
Buku Teks