Powell, David M., Carlstead, Kathy J., Tarou, Loraine, Brown, Janine L., and Monfort, Steven L. 2006. "Effects of construction noise on behavior and cortisol levels in a pair of captive giant pandas (Ailuropoda melanoleuca)." Zoo biology, 391–408. 25, (5), Hoboken, New Jersey: Wiley-Liss. https://doi.org/10.1002/zoo.20098.