Ah Louis of China, who became a highly respected citizen of San Luis Obispo. He passed away December 16, 1936, at 96 years of age

Chicago citation style
unknown. Ah Louis of China, who became a highly respected citizen of San Luis Obispo. He passed away December 16, 1936, at 96 years of age. undated : circa 1920s. Retrieved from the Digital Public Library of America, http://www.luna.blackgold.org/luna/servlet/detail/blackgold~1~1~29~49. (Accessed December 14, 2018.)
APA citation style
unknown, (undated : circa 1920s) Ah Louis of China, who became a highly respected citizen of San Luis Obispo. He passed away December 16, 1936, at 96 years of age. Retrieved from the Digital Public Library of America, http://www.luna.blackgold.org/luna/servlet/detail/blackgold~1~1~29~49
MLA citation style
unknown. Retrieved from the Digital Public Library of America <http://www.luna.blackgold.org/luna/servlet/detail/blackgold~1~1~29~49>.
Note: These citations are programmatically generated and may be incomplete.