APA Citation

(1989). Biological diversity makes a world of difference. [Lugar de publicación no identificado]: National Park Service.

Chicago Style Citation

Biological Diversity Makes a World of Difference. [Lugar de publicación no identificado]: National Park Service, 1989.

MLA Citation

Biological Diversity Makes a World of Difference. [Lugar de publicación no identificado]: National Park Service, 1989.

Warning: These citations may not always be 100% accurate.