Adhitia Pratama, author
Universitas Indonesia, 2011
UI - Skripsi (Open)
Darjanto
Gramedia, 1990
Buku Teks
Ichtiar Baru-van Hoeve, 1989
Buku Referensi
Nugroho Susetya Putra
Kanisius, 1994
Buku Teks
Sola, Eugenio, author
GHSNP Management Project, 2005
Buku Teks