“Potential of Siam Weed Extract in Combination With Trichoderma Harzianum to Stimulate Seed Germination of Coffea Arabica”. 2024. Pelita Perkebunan (a Coffee and Cocoa Research Journal) 40 (1): 1-11. https://mail.ccrjournal.com/index.php/ccrj/article/view/595.