Hopkins and Underwood's new arithmetics.
First book.
By John W. Hopkins and P.H. Underwood.
APA Citation
Hopkins, J. W. (John William)., Underwood, P. H. (Patrick Healy). (1907). Hopkins and Underwood's new arithmetics. New York: The Macmillan Company, etc., etc.
MLA Citation
Hopkins, John W. (John William), 1861-, and P. H. (Patrick Healy) Underwood. Hopkins And Underwood's New Arithmetics. New York: The Macmillan Company, etc., etc, 1907.
Warning: These citations may not always be complete (especially for serials).