Fishburn, Peter C., author
John Wiley & Sons, 1970
Buku Teks
Stallings, William, author
Indeks, 2006
Buku Teks
Wait, John V., author
McGraw-Hill, 1992.
Buku Teks
Wait, John V., author
McGraw-Hill, c1975
Buku Teks
Achmad Muttaqin Djanggola
Fakultas Eknonomi dan Bisnis Universitas Indonesia, 2010
UI - Tesis (Open)