The Histomap. Four Thousand Years Of World History. Relative Power Of Contemporary States, Nations And Empires. Copyright by John B. Sparks. Published by Histomap, Inc. Chicago, Ill. Printed and distributed in the U.S.A. by Rand McNally & Co., Chicago, IllThe Histomap

Chicago citation style
Rand McNally and Company, Sparks, John B. The Histomap. Four Thousand Years Of World History. Relative Power Of Contemporary States, Nations And Empires. Copyright by John B. Sparks. Published by Histomap, Inc. Chicago, Ill. Printed and distributed in the U.S.A. by Rand McNally & Co., Chicago, Ill,The Histomap. 1931. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~200375~3001080. (Accessed December 10, 2018.)
APA citation style
Rand McNally and Company, Sparks, John B, (1931) The Histomap. Four Thousand Years Of World History. Relative Power Of Contemporary States, Nations And Empires. Copyright by John B. Sparks. Published by Histomap, Inc. Chicago, Ill. Printed and distributed in the U.S.A. by Rand McNally & Co., Chicago, Ill,The Histomap. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~200375~3001080
MLA citation style
Rand McNally and Company, Sparks, John B. Retrieved from the Digital Public Library of America <https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~200375~3001080>.
Note: These citations are programmatically generated and may be incomplete.