APA ציטוט

Cummings, B. (1910). The great natural bridges of Utah. University of Utah.

Chicago Style (17th ed.) Citation

Cummings, Byron. The Great Natural Bridges of Utah. [Salt Lake City]: University of Utah, 1910.

ציטוט MLA

Cummings, Byron. The Great Natural Bridges of Utah. University of Utah, 1910.