Larue, Gerald A.
Prentice-Hall, 1975
Buku Teks
Moncrieff, A.R. Hope, author
Gramercy Books, 1995
Buku Referensi
Cotterell, Arthur, author
Lorenz Books, 2013
Buku Teks
May, Rollo, 1909-, author
W.W. Norton, 1991
Buku Teks
Leick, Gwendolyn, author
Routledge, 1998
Buku Referensi