"Keeling, Dr. Charles D."

Chicago citation style
SIO Photographic Laboratory. "Keeling, Dr. Charles D.". 1980-11-20. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb80215524. (Accessed December 10, 2018.)
APA citation style
SIO Photographic Laboratory, (1980-11-20) "Keeling, Dr. Charles D.". Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb80215524
MLA citation style
SIO Photographic Laboratory. Retrieved from the Digital Public Library of America <https://library.ucsd.edu/dc/object/bb80215524>.
Note: These citations are programmatically generated and may be incomplete.