():
Mysterious caves of Langkawi, Malaysia,
119 pages, 1st ed. edition
Dept. of Irrigation and Drainage, Ministry of Agriculture, Malaysia and Design Dimension Sdn. Bhd. amazon.com
Johnny Ong (1994):
Mysterious Caves of Langkawi,
Dept. of Irrigation and Drainage, Ministry of Agriculture and Design Dimension, Malaysia, 1994. Hard back, 122pp, colour photos throughout, slightly smaller than A4. Books on Malaysian Caves
Shaharin Yussof (1997):
The natural and other histories of Batu Caves,
A5 soft cover, pp.i-ix, 1-55, +46 colour plates. Books on Malaysian Caves