Comparative effectiveness of some visual aids in seventh grade instruction,

APA Citation

Weber, J. J. (1922). Comparative effectiveness of some visual aids in seventh grade instruction. Chicago, Ill.: The Educational screen, inc..

MLA Citation

Weber, Joseph J., 1890-. Comparative Effectiveness of Some Visual Aids In Seventh Grade Instruction. Chicago, Ill.: The Educational screen, inc., 1922.

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