Scalapino, Robert A., author
University of California Press, 1967
Buku Teks
Penniman, Howard R., author
Appleton-Century-Crofts, 1952
Buku Teks
Crittenden, John A.
Prentice-Hall, 1982
Buku Teks
Edwards, George C., author
Thomson, 2006
Buku Teks
Edwards, George C., author
Thomson Wadworth, 2006
Buku Teks