Dieringer, G. et al. 1998. Endothermy and floral utilization of Cyclocephala caelestis (Coleoptera: Scarabaeoidea; Melolonthidae): a cloud forest endemic beetle. ACTA ZOOLÓGICA MEXICANA (N.S.). 73 (abr. 1998), 145–153. DOI:https://doi.org/10.21829/azm.1998.73731732.