Perry, R. W. (1945). Blackboard illustration. The Manual arts press.
Chicago Style (17th ed.) CitationPerry, Raymond W. Blackboard Illustration. Peoria, III: The Manual arts press, 1945.
MLA (9th ed.) CitationPerry, Raymond W. Blackboard Illustration. The Manual arts press, 1945.
Warning: These citations may not always be 100% accurate.