edited by Oscar Williams
Washingtonn Press, 1955
Buku Teks
Tigner, Robert L.
Princeton University Press, 1976
Buku Teks
Banerjee, Sumanta, author
Oxford University Press, 2016
eBooks
edited by Langdon Lynne Faust
Ungar, 1988
Buku Referensi
Ball, Victoria Kloss, author
John Wiley & Sons, 1980
Buku Teks