APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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