Goldberg, L. (2009). Patterns of nectar production and composition, and morphology of floral nectaries in Helicteres guazumifolia and Helicteres baruensis (Sterculiaceae): Two sympatric species from the Costa Rican tropical dry forest. Universidad de Costa Rica.
Style de citation Chicago (17e éd.)Goldberg, Loretta. Patterns of Nectar Production and Composition, and Morphology of Floral Nectaries in Helicteres Guazumifolia and Helicteres Baruensis (Sterculiaceae): Two Sympatric Species from the Costa Rican Tropical Dry Forest. Universidad de Costa Rica, 2009.
Style de citation MLA (9e éd.)Goldberg, Loretta. Patterns of Nectar Production and Composition, and Morphology of Floral Nectaries in Helicteres Guazumifolia and Helicteres Baruensis (Sterculiaceae): Two Sympatric Species from the Costa Rican Tropical Dry Forest. Universidad de Costa Rica, 2009.