Odell, W. R., Clark, H. F., Miller, G. D., Paulson, O. B., Travis, D. L., & Twiss, R. M. (1937). Directed activities to accompany How modern business serves us. Ginn and Company.

Odell, William Rockhold, Harold F. Clark, Guy D. Miller, Oscar B. Paulson, Dorothy L. Travis, and Ruth M. Twiss. Directed Activities to Accompany How Modern Business Serves Us. Boston : New York [etc.]: Ginn and Company, 1937.

Odell, William Rockhold, et al. Directed Activities to Accompany How Modern Business Serves Us. Ginn and Company, 1937.