Dyfyniad APA

Hilje, L. (2017). Adelaida Chaverri: The First Costa Rican Naturalist and Conservationist.

Dyfyniad Arddull Chicago

Hilje, Luko. Adelaida Chaverri: The First Costa Rican Naturalist and Conservationist. 2017.

Dyfyniad MLA

Hilje, Luko. Adelaida Chaverri: The First Costa Rican Naturalist and Conservationist. 2017.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.