Bishin, William
Foundation Press, 1972
Buku Teks
Pincoffs, Edmund L.
California Wadsworth , 1991
Buku Teks
Cohen, Felix S.
Cornell University Press, 1959
Buku Teks
Maris, Cees, editor
Springer, 2011
eBooks
Lee, Simon
Oxford University Press , 1986
Buku Teks