Rosinger, Lawrence K.
Alfred A.Knopf , 1945
Buku Teks
Lam, N. Mark
Elex Media Komputindo, 2007
Buku Teks
Russel, Bertrand, author
George Allen and Unwin, 1922
Buku Teks
Priestley, K.E., author
The Green Pagoda Press, 1961
Buku Teks
Lary, Diana, author
Cambridge University Press, 2007
Buku Teks