Mohd Bakri, Mohd Azwan, J. Salmah, S. Abd Rahim, and K. Norman. 2020. “A Study on Agro-Hybrid Farm Vehicle With Small Onboard Solar Photovoltaic for Herbicide Spraying in Oil Palm Plantation”. Journal of Advanced Research in Applied Sciences and Engineering Technology 17 (1):61-77. https://akademiabaru.com/submit/index.php/araset/article/view/1993.