Dickson, D. C. M. (David C. M.), 1959-
Cambrigde University Press , 2013
Buku Teks
Willett, Allan H.
University of Pennsylvania Press, 1951
Buku Teks
Hammond, J.D.
Foresman and Company, 1968
Buku Teks
Seal, Hilary L.
John Wiley & Sons, 1978
Buku Teks
Camili, Stephen J
ACTEX Publications, 2014
Buku Teks