Pomerance, Murray, author
Polity Press, 2013
Buku Teks
Thomas Leithch and Lelan Poague
Wiley-Blackwell, 2011
Buku Teks
Steward, Julian H.
Columbia University Press, 1973
Buku Teks
New York: W.W.Norton & Company, 1988,
Buku Referensi
Cho, Hae-il, author
Dong-su-Munhak-sa, 1990
Buku Teks