nstitute for Economic and Financial Research
Ecfin, 1999
Buku Referensi
Sumantoro, author
Universitas Indonesia, 1975
Buku Teks
Sumantoro, author
Ghalia Indonesia, 1990
Buku Teks
Tjiptono Darmadji, author
Salemba Empat , 2001
Buku Teks
Purba, Victor, author
Badan Penerbit Fakultas Hukum UI, 2004
Buku Teks