APA (7th ed.) Citation

Gilmore, C. W. Fossil footprints from the Grand Canyon. Smithsonian Inst.

Chicago Style (17th ed.) Citation

Gilmore, Charles W. Fossil Footprints from the Grand Canyon. Washington: Smithsonian Inst.

MLA (9th ed.) Citation

Gilmore, Charles W. Fossil Footprints from the Grand Canyon. Smithsonian Inst.

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