APA-referens (7:e uppl.)

Napalang, M. S. G., Napalang, M. S. G., Agatep, P. M. G., Navarro, A. M., & Detros, K. C. (2018). Results of the assessment of the motor vehicle user's charge utilization in the Philippines. Philippine Institute for Development Studies.

Chicago-referens (17:e uppl.)

Napalang, Ma. Shiela G., Ma. Shiela G. Napalang, Pia May G. Agatep, Adoracion M. Navarro, och Keith C. Detros. Results of the Assessment of the Motor Vehicle User's Charge Utilization in the Philippines. Philippines: Philippine Institute for Development Studies, 2018.

MLA-referens (9:e uppl.)

Napalang, Ma. Shiela G., et al. Results of the Assessment of the Motor Vehicle User's Charge Utilization in the Philippines. Philippine Institute for Development Studies, 2018.