Introduction to the calculus of variations /
by William Elwood Byerly.

APA Citation

Byerly, W. Elwood. (1917). Introduction to the calculus of variations. Cambridge: Harvard University Press.

MLA Citation

Byerly, William Elwood, 1849-1935. Introduction to the Calculus of Variations. Cambridge: Harvard University Press, 1917.

Warning: These citations may not always be complete (especially for serials).