“EARLY SURVIVAL AND GROWTH IN FIELD TRIALS OF AQUILARIA MALACCENSIS (KARAS) AND AZADIRACHTA EXCELSA (SENTANG)”. JOURNAL OF TROPICAL FOREST SCIENCE, vol. 11, no. 4, Oct. 1999, pp. 852-4, https://jtfs.frim.gov.my/jtfs/article/view/1557.