(1987). Water & wastewater international. Publisher not identified.
Chicagoスタイル(17版)引用形式Water & Wastewater International. Houston, Texas: Publisher not identified, 1987.
MLA(9版)引用形式Water & Wastewater International. Publisher not identified, 1987.
警告: この引用は必ずしも正確ではありません.