Fundamentals of practical mathematics,
by George Wentworth, David Eugene Smith and Herbert Druery Harper.
APA Citation
Wentworth, G., Harper, H. Druery., Smith, D. Eugene. (1922). Fundamentals of practical mathematics. Boston: Ginn.
MLA Citation
Wentworth, George, 1868-, Herbert Druery Harper, and David Eugene Smith. Fundamentals of Practical Mathematics. Boston: Ginn, 1922.
Warning: These citations may not always be complete (especially for serials).