Cita APA (7th ed.)
Freeman, H. (1995). Industrial pollution prevention handbook. McGraw-Hill.
Cita Chicago (17th ed.)
Freeman, Harry. Industrial Pollution Prevention Handbook. New York: McGraw-Hill, 1995.
Cita MLA (9th ed.)
Freeman, Harry. Industrial Pollution Prevention Handbook. McGraw-Hill, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.