Fajardo, A. R., Sajise, A. J. U., Predo, C. D., de Luna, C. C., Diona, D. L. Z. I., & Pulhin, J. M. Estimating the recreational value and setting entrance fees during early development of ecotourism sites: The case of Bataan Natural Park. Philippine Journal of Science.
Chicago-referens (17:e uppl.)Fajardo, Arielle R., Asa Jose U. Sajise, Canesio D. Predo, Catherine C. de Luna, Dan Leo Z. II Diona, och Juan M. Pulhin. "Estimating the Recreational Value and Setting Entrance Fees During Early Development of Ecotourism Sites: The Case of Bataan Natural Park." Philippine Journal of Science .
MLA-referens (9:e uppl.)Fajardo, Arielle R., et al. "Estimating the Recreational Value and Setting Entrance Fees During Early Development of Ecotourism Sites: The Case of Bataan Natural Park." Philippine Journal of Science, .