Taschen,
Buku Teks
edited by J. William Hebel and Hoyt H. Hudson
Appleton-Century-Crofts, 1929
Buku Teks
Biesinger, Joseph A., author
Facts On File, 2006
Buku Teks
Lethbridge, Henry J.
Dragonfly Books, 1963
Buku Teks
Dev, Ashu Tosh, author
Jhamapooker Lane, 1950
Buku Referensi