Chen, Chen Yi Shang, and Cheksum Tawan. “Botany, Diversity, and Distribution of Black Pepper (Piper Nigrum L.) Cultivars in Malaysia”. Borneo Journal of Resource Science and Technology 10, no. 1 (July 1, 2020): 10-23. Accessed April 29, 2024. https://publisher.unimas.my/ojs/index.php/BJRST/article/view/1566.