Sanganguey, an extinct volcano, southeast of Tepic

Chicago citation style
Gulick, Howard E. Sanganguey, an extinct volcano, southeast of Tepic. 1962-05-12. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb8840870h. (Accessed December 13, 2018.)
APA citation style
Gulick, Howard E, (1962-05-12) Sanganguey, an extinct volcano, southeast of Tepic. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb8840870h
MLA citation style
Gulick, Howard E. Retrieved from the Digital Public Library of America <https://library.ucsd.edu/dc/object/bb8840870h>.
Note: These citations are programmatically generated and may be incomplete.