Não informado. (1971). Concrete abstracts. American Concrete Institute.
Chicago Style (17th ed.) CitationNão informado. Concrete Abstracts. Detroit, Mich: American Concrete Institute, 1971.
MLA (8th ed.) CitationNão informado. Concrete Abstracts. American Concrete Institute, 1971.
Warning: These citations may not always be 100% accurate.