Choudhury, Apurba Kanti, Md. Jalal Uddin Sarker, Md. Harunur Rashid, Md. Mamunur Rashid Sarker, Md. Shahduzzaman, Md. Sirajul Islam, and H. M. Khairul Bashar. 2015. “Response of Vegetables to NPK Briquette Deep Placement”. Agriculture and Natural Resources 49 (4). Bangkok, Thailand:536-46. https://li01.tci-thaijo.org/index.php/anres/article/view/243643.