Rice, Tamara Talbot
Praeger, 1965
Buku Teks SO
Information Office of the State Council & State Adminiastration of Cultural Heritage
Cultural Relics Publishing Housing : China Intercontinental Press, 2006
Buku Referensi
Pritchard, Jim
American Management Association, 2006
eBooks
Archipelago, 1999
Buku Referensi
edited by Robert N. Wilson
Prentice-Hall, 1964
Buku Teks SO