Cita APA

Gill, D. E. (1998). The flowering plants of Palo Verde National Park, Guanacaste province, Costa Rica: Keys and annotated lists.

Citación estilo Chicago

Gill, Douglas E. The Flowering Plants of Palo Verde National Park, Guanacaste Province, Costa Rica: Keys and Annotated Lists. 1998.

Cita MLA

Gill, Douglas E. The Flowering Plants of Palo Verde National Park, Guanacaste Province, Costa Rica: Keys and Annotated Lists. 1998.