Figueiredo, R. A. de. “Visitation of Buddleja Brasiliensis (Buddlejaceae) by Bees and Hummingbirds in an Upland Hygrophilous Forest of São Paulo State”. Ciência E Natura, vol. 19, no. 19, Dec. 1997, pp. 133-42, doi:10.5902/2179460X26770.