Sopper, W. E. (1993). Municipal sludge use in land reclamation. Lewis Publishers.
Chicagoスタイル(17版)引用形式Sopper, William E. Municipal Sludge Use in Land Reclamation. Boca Raton: Lewis Publishers, 1993.
MLA(9版)引用形式Sopper, William E. Municipal Sludge Use in Land Reclamation. Lewis Publishers, 1993.
警告: この引用は必ずしも正確ではありません.