The business of advertising,
by Earnest Elmo Calkins.
APA Citation
Calkins, E. Elmo. (1915). The business of advertising. New York: D. Appleton.
MLA Citation
Calkins, Earnest Elmo, 1868-1964. The Business of Advertising. New York: D. Appleton, 1915.
Warning: These citations may not always be complete (especially for serials).