David Nicholas, Ian Rowlands
Aslib, 2000
Buku Teks
Rapp, Stan, author
McGraw-Hill , 2001
Buku Teks
Universitas Indonesia, 2006
UI - Skripsi (Membership)
Universitas Indonesia, 2002
UI - Skripsi (Membership)
Nazaruddin, author
Universitas Indonesia, 1998
UI - Tesis (Membership)