APA (7th ed.) Citation

Callender, J. F. (1989). Rio Grande Rift: El Paso, Texas, to Denver, Colorado, July 20-30, 1989. American Geophysical Union.

Chicago Style (17th ed.) Citation

Callender, J. F. Rio Grande Rift: El Paso, Texas, to Denver, Colorado, July 20-30, 1989. Washington, D.C: American Geophysical Union, 1989.

MLA (9th ed.) Citation

Callender, J. F. Rio Grande Rift: El Paso, Texas, to Denver, Colorado, July 20-30, 1989. American Geophysical Union, 1989.