APA引文

Grayum, M. H. (2027). Paul C. Standley: A century after his botanical work in Costa Rica.

Citación estilo Chicago

Grayum, Michael H. Paul C. Standley: A Century After His Botanical Work in Costa Rica. 2027.

MLA引文

Grayum, Michael H. Paul C. Standley: A Century After His Botanical Work in Costa Rica. 2027.

警告：這些引文格式不一定是100％准確.