Elementary theory of equations,
by William Vernon Lovitt.
APA Citation
Lovitt, W. Vernon. (1939). Elementary theory of equations. New York: Prentice-Hall, inc..
MLA Citation
Lovitt, William Vernon, 1881-1972. Elementary Theory of Equations. New York: Prentice-Hall, inc., 1939.
Warning: These citations may not always be complete (especially for serials).