Luoma, S. N. (1984). Introduction to environmental issues. MacMillan.
Cita Chicago (17th ed.)Luoma, Samuel N. Introduction to Environmental Issues. London: MacMillan, 1984.
Cita MLA (9th ed.)Luoma, Samuel N. Introduction to Environmental Issues. MacMillan, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.