Cita APA (7th ed.)
Trzupek, R. (2003). Air quality compliance and permitting manual. McGraw-Hill.
Cita Chicago (17th ed.)
Trzupek, Richard. Air Quality Compliance and Permitting Manual. New York: McGraw-Hill, 2003.
Cita MLA (9th ed.)
Trzupek, Richard. Air Quality Compliance and Permitting Manual. McGraw-Hill, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.