Gabriel, John Alvin M., and Peter G. Narsico. “Fuel Consumption Efficiency in Construction Equipment Operations: A Mixed Methods Analysis of Determinants and Practices”. International Journal of Multidisciplinary: Applied Business and Education Research 6, no. 9 (September 23, 2025): 4810–4829. Accessed January 23, 2026. https://ijmaberjournal.org/index.php/ijmaber/article/view/2870.