APA način citiranja

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

Čikaški stil citiranja

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

MLA način citiranja

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

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