APA (7th ed.) Citation

(2015). El Calderon area: Trail guide. National Park Service, U.S. Department of the Interior, El Malpais National Monument.

Chicago Style (17th ed.) Citation

El Calderon Area: Trail Guide. Grants, NM: National Park Service, U.S. Department of the Interior, El Malpais National Monument, 2015.

MLA (9th ed.) Citation

El Calderon Area: Trail Guide. National Park Service, U.S. Department of the Interior, El Malpais National Monument, 2015.