1. Alvensleben, R.V. 1980. Marketing of tropical orchids from ASEAN countries in Western Europe. Pages 76–202 in Proc. Third ASEAN Orchid Congress. Ministry of Agriculture, Kuala Lumpur, Malaysia.
2. Burkill, H.M. 1978. The role of Singapore Botanic Gardens in the development of orchid hybrids. Pages 38–41 in E.S. Teoh, ed., Orchids. Orchid Society of South East Asia, Singapore.
3. Ede, A., and J. Ede. 1985. Living with orchids. MPH Publications, Singapore.
4. Ede, J. 1966. Purple gold. Pages 2–6 in D. Naidu, ed., Pelita. Esso Standard Malaya, Kuala Lumpur, Malaysia.
5. Holttum, R.E. 1964. Flora of Malaya. Vol 1. Orchids. 3rd ed. Government Printing Office, Singapore.