Ullmer, J. B. H. E. J. Educational comunications and technology an introduction. Wm. C. Brown Co.
Chicago Style (17th ed.) CitationUllmer, John B. Haney Eldon J. Educational Comunications and Technology an Introduction. Wm. C. Brown Co.
MLA (8th ed.) CitationUllmer, John B. Haney Eldon J. Educational Comunications and Technology an Introduction. Wm. C. Brown Co.
Warning: These citations may not always be 100% accurate.