A new universal atlas containing maps of the various empires, kingdoms, states and republics of the world ...
MLA
Duval, P. S., et al. A New Universal Atlas Containing Maps of the Various Empires, Kingdoms, States and Republics of the World ... 1850. https://collections.library.yale.edu/catalog/2042185.
APA, 6th edition
Duval, P. S., Son, W., & J. (1850). A new universal atlas containing maps of the various empires, kingdoms, states and republics of the world ... [Atlases, Illustrations, Lithographs, Planographic prints, Prints (Visual works), Title pages]. https://collections.library.yale.edu/catalog/2042185.