Swastha, Basu
Liberty , 1997
Buku Teks
Swastha, Basu
Liberty, 2007
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Mahmud Machfoedz
Andi, 2007
Buku Teks SO
Robert M. Buffington, Eithne LuibhÊid, and Donna J. Guy, editors
Wiley Balckwell, 2014
Buku Teks SO
Jessup, Philip Caryl, 1897-1986
Nuansa, 2012
Buku Teks SO