O`Byrne, Peter, author
Orchid society of south east Asia, 2001
Buku Teks
Konstantin Akbar Kamaruddinn, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1977
UI - Skripsi (Membership)
Jung, Min
Borim, 2010
Buku Teks
Mu`nis, Husayn
Kairo: Maktabat al-Nahdat al-Misriyyah, 1948
Buku Teks
An-min, Chung
Charles E Merril, 1963
Buku Teks