Steinmetz Park Association (2006). "Steinmetz Park Master Plan"(PDF). Schenectady, N.Y. p. 3. Archived from the original(PDF) on November 20, 2011. Retrieved January 22, 2013.
Bedell, Frederick (1942). "History of A-C Wave Form, Its Determination and Standardization". Transactions of the American Institute of Electrical Engineers. 61 (12): 865. doi:10.1109/T-AIEE.1942.5058456. S2CID51658522.
Charles Proteus Steinmetz. Invent Now, Inc. Hall of Fame profile. Invent Now, Inc. Archived from the original on March 3, 2016. Retrieved May 25, 2014.
Steinmetz & Berg 1897 Steinmetz; Berg (1897). Theory and Calculation of Alternating Current Phenomena (1st ed.). New York: Electrical World and Engineer. OL7218906M. This book's first edition was expanded and updated in many subsequent editions.
oxfordreference.com
Kline 2014. Kline, Ronald (2014). "Steinmetz, Charles". In Slotten, Hugh Richard (ed.). The Oxford Encyclopedia of the History of American Science, Medicine, and Technology. Oxford University Press. ISBN978-0199766666.
Bedell, Frederick (1942). "History of A-C Wave Form, Its Determination and Standardization". Transactions of the American Institute of Electrical Engineers. 61 (12): 865. doi:10.1109/T-AIEE.1942.5058456. S2CID51658522.
Charles Proteus Steinmetz. Invent Now, Inc. Hall of Fame profile. Invent Now, Inc. Archived from the original on March 3, 2016. Retrieved May 25, 2014.
Steinmetz Park Association (2006). "Steinmetz Park Master Plan"(PDF). Schenectady, N.Y. p. 3. Archived from the original(PDF) on November 20, 2011. Retrieved January 22, 2013.