Muehlenbein, M., Ancrenaz, M., Sakong, R., Ambu, L., Prall, S., Fuller, G., & Raghanti, M. (2012). Ape Conservation Physiology: Fecal Glucocorticoid Responses in Wild Pongo Pygmaeus Morio Following Human Visitation. PLoS One. https://doi.org/10.1371/journal.pone.0033357
Muehlenbein, Michael, Marc Ancrenaz, Rosman Sakong, Laurentius Ambu, Sean Prall, Grace Fuller, and Mary Raghanti. 2012. “Ape Conservation Physiology: Fecal Glucocorticoid Responses in Wild Pongo Pygmaeus Morio Following Human Visitation”. PLoS One. https://doi.org/10.1371/journal.pone.0033357.
Muehlenbein, M., M. Ancrenaz, R. Sakong, L. Ambu, S. Prall, G. Fuller, and M. Raghanti. Ape Conservation Physiology: Fecal Glucocorticoid Responses in Wild Pongo Pygmaeus Morio Following Human Visitation. PLoS One, 15 Mar. 2012, doi:10.1371/journal.pone.0033357.