APA aipamena

Sopper, W. E. (1993). Municipal sludge use in land reclamation. Lewis Publishers.

Chicago Style aipamena

Sopper, William E. Municipal Sludge Use in Land Reclamation. Boca Raton, Fla.: Lewis Publishers, 1993.

MLA aipamena

Sopper, William E. Municipal Sludge Use in Land Reclamation. Lewis Publishers, 1993.