Hines, L. G. (1973). Environmental issues: Population, pollution, and economics ([1st ed.].). Norton.
Cita Chicago (17th ed.)Hines, Lawrence Gregory. Environmental Issues: Population, Pollution, and Economics. [1st ed.]. New York: Norton, 1973.
Cita MLA (9th ed.)Hines, Lawrence Gregory. Environmental Issues: Population, Pollution, and Economics. [1st ed.]. Norton, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.