Hauke, R. L. (1967). The Natural History of Equisetum in Costa Rica.
Citación estilo ChicagoHauke, Richard L. The Natural History of Equisetum in Costa Rica. 1967.
MLA引文Hauke, Richard L. The Natural History of Equisetum in Costa Rica. 1967.
警告：這些引文格式不一定是100％准確.