Rahmaniar Brahim, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1981
UI - Skripsi (Membership)
Bird, Tony, author
[publisher not identified], [date of publication not identified]
Buku Teks
Harmita, author
FMIPA-UI, 2004
Buku Teks
Bird, Tony, author
Gramedia, 1987
Buku Teks
Millinesia, author
Universitas Indonesia, 1985
UI - Skripsi (Membership)