Cita APA (7th ed.)
Knepper, W. E. (1991). Harmonizing Economic Competitiveness with Environmental Quality: A North American Challenge. The North American Institute.
Cita Chicago (17th ed.)
Knepper, William E. Harmonizing Economic Competitiveness with Environmental Quality: A North American Challenge. Santa Fe, EUA: The North American Institute, 1991.
Cita MLA (9th ed.)
Knepper, William E. Harmonizing Economic Competitiveness with Environmental Quality: A North American Challenge. The North American Institute, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.