Chiam Jing Tong, Danieal Zita, Muhammad Faqree Aiman Mahtar, Chee-Ming Chan, Salina Sani, and Tuan Noor Hasanah Tuan Ismail. Tales of Soils: Get Your Hands Dirty, But Make Yourself Brainy. Penerbit UTHM, 2025. Accessed March 12, 2026. https://publisher.uthm.edu.my/omp/index.php/penerbituthm/catalog/book/484.