Não informado. (1956). Instructional materials. National Education Association, Department of Audio Visual Instruction.
Chicago Style (17th ed.) CitationNão informado. Instructional Materials. Washington: National Education Association, Department of Audio Visual Instruction, 1956.
MLA (8th ed.) CitationNão informado. Instructional Materials. National Education Association, Department of Audio Visual Instruction, 1956.
Warning: These citations may not always be 100% accurate.