Não informado. (1930). Civil Engineering. American Society of Civil Engineers.
Chicagoスタイル(17版)引用形式Não informado. Civil Engineering. New York: American Society of Civil Engineers, 1930.
MLA(8版)引用形式Não informado. Civil Engineering. American Society of Civil Engineers, 1930.
警告: この引用は必ずしも正確ではありません.