The "spire" of Guadalupe Canyon

Chicago citation style
Gulick, Howard E. The "spire" of Guadalupe Canyon. 1960-01-02. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb1298142x. (Accessed December 15, 2018.)
APA citation style
Gulick, Howard E, (1960-01-02) The "spire" of Guadalupe Canyon. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb1298142x
MLA citation style
Gulick, Howard E. Retrieved from the Digital Public Library of America <https://library.ucsd.edu/dc/object/bb1298142x>.
Note: These citations are programmatically generated and may be incomplete.