The tree communities of the Central Catchment Nature Reserve, SingaporeYew Kwan Wong, Ping Ting Chew, Ali bin Ibrahim · First published 1994Open the Tome
A guide to the Bukit Timah Nature ReserveChoo-Toh Get Ten, C. J. Hails, Bernard Harrison, Wee Yeow Chin, Wong Yew Kwan · First published 1985Open the Tome
