Weaver, R. E., Jr. (1972). The genus Macrocarpaea (Gentianaceae) in Costa Rica. Zenodo.
Cita Chicago (17th ed.)Weaver, Richard E., Jr. The Genus Macrocarpaea (Gentianaceae) in Costa Rica. Zenodo, 1972.
Cita MLA (9th ed.)Weaver, Richard E., Jr. The Genus Macrocarpaea (Gentianaceae) in Costa Rica. Zenodo, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.