McFarlands & Company, 1983
Buku Referensi
edited by Karl Min Ku
Gale Asia Cengage Learning, 2013
Buku Teks
Shera, Jesse H.
Archon Books, 1965
Buku Referensi
M. Solihin Arianto, author
UIN Sunan Kalijaga, 2006
Artikel Jurnal
American university,
Majalah, Jurnal, Buletin