Universitas Indonesia, 2007
UI - Skripsi (Membership)
Teply, Larry L.
St. Paul Minn, 1992
Buku Teks
Craver, Charles B.
The Michie Company, 1997
Buku Teks
Erlin Triartha Yuliani
Universitas Indonesia, 2020
UI - Tesis (Membership)
Tay Swee Kian, Catherine
Singapore University Press, 1998
Buku Teks