Ricky Ganang, 1951-, author
National department for culture & Arts, 2009
Buku Referensi
London: Tiger Books International, 1994,
Buku Referensi
Purity Sabila Ajiningrum, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2011
UI - Tesis (Open)
Guandola, M.H.
Merriam & Webster, INC, 1989
Buku Teks
1976
Buku Teks