Medina-Medina, Luis A., Adam G. Hart, and Francis L.W. Ratnieks. 2014. “Waste Management in the Stingless Bee Melipona Beecheii Bennett (Hymenoptera: Apidae)”. Sociobiology 61 (4). Feira de Santana, Brazil:435-40. https://doi.org/10.13102/sociobiology.v61i4.435-440.