Não informado. (1987). National Business Education Yearbook. National Business Education Association.
Chicago Style (17th ed.) CitationNão informado. National Business Education Yearbook. Reston, Va: National Business Education Association, 1987.
MLA (8th ed.) CitationNão informado. National Business Education Yearbook. National Business Education Association, 1987.
Warning: These citations may not always be 100% accurate.