Smith, Bernard, author
Oxford University Press, 1976
Buku Teks
Shipps, Steve, author
Blackwell Publishing, 2008
Buku Teks
Myers, Bernard S., author
McGraw-Hill, 1967
Buku Teks
Progress Publisher , 1968
Buku Teks
Astrianto Adianggoro, author
Universitas Indonesia, 2007
UI - Skripsi (Membership)