The art of resultful letter writing,
Robert Ruxton.
APA Citation
Ruxton, R. (1918). The art of resultful letter writing. 3rd ed. Cleveland: Mailbag Pub. Co..
MLA Citation
Ruxton, Robert, 1872-. The Art of Resultful Letter Writing. 3rd ed. Cleveland: Mailbag Pub. Co., 1918.
Warning: These citations may not always be complete (especially for serials).