APA
Wijesekra R., Nethsingha C., . (1975). Compendium on Spices of Sri lanka: Cardamom. Colombo: Ceylon Institute of Scientofic & INdusstrial Reasearch.
Chicago
Wijesekra R.O.B, Nethsingha Clodagh, . 1975. Compendium on Spices of Sri lanka: Cardamom. Colombo: Ceylon Institute of Scientofic & INdusstrial Reasearch.
Harvard
Wijesekra R., Nethsingha C., . (1975). Compendium on Spices of Sri lanka: Cardamom. Colombo: Ceylon Institute of Scientofic & INdusstrial Reasearch.
MLA
Wijesekra R.O.B, Nethsingha Clodagh, . Compendium on Spices of Sri lanka: Cardamom. Colombo: Ceylon Institute of Scientofic & INdusstrial Reasearch. 1975.