Robinson, H. E. (1981). A revision of the tribal and subtribal limits of the Heliantheae (Asteraceae). Smithsonian Institution.
Cita Chicago Style (17a ed.)Robinson, Harold Ernest. A Revision of the Tribal and Subtribal Limits of the Heliantheae (Asteraceae). Washington: Smithsonian Institution, 1981.
Cita MLA (9a ed.)Robinson, Harold Ernest. A Revision of the Tribal and Subtribal Limits of the Heliantheae (Asteraceae). Smithsonian Institution, 1981.
Precaución: Estas citas no son 100% exactas.