Taylor, Carl C.
Loisiana University Press , 1948
Buku Teks
Mclachlan, Noel
Penguin Book, 1989
Buku Teks
Kingston, Jeff, 1957-
Wiley Blackwell, 2016
Buku Teks
Fredrickson, George M.
Univ. of California Press, 2000
Buku Teks
Christie, Clive J.
Tauris Academic, 1996
Buku Teks