[1]
Michener, C.D. and Eickwort, K.R. 1966. Observations on Nests of <i>Ceratina</i> in Costa Rica (Hymenoptera, Apoidea). Revista de Biología Tropical. 14, 2 (Dec. 1966), 279–286. DOI:https://doi.org/10.15517/rev.biol.trop.1966.28537.