Edited by Laura S. Etheredge
Britannica Educational Pub. in association with Rosen Educational Services, 2010
Buku Teks SO
Lapidus, Ira M.
Cambridge University Press, 2014
Buku Teks SO
Ansari, Tamim
PublicAffairs, 2009
Buku Teks SO
Smith, Wilfred Cantwell
The New American Library, 1957
Buku Teks SO
Faisal Ismail
IRCiSod, 2017
Buku Teks SO