Morgan, M. T. (1997). Environmental health (2nd ed.). Morton Publishing.
Cita Chicago (17th ed.)Morgan, Monroe T. Environmental Health. 2nd ed. Englewood, Col.: Morton Publishing, 1997.
Cita MLA (8th ed.)Morgan, Monroe T. Environmental Health. 2nd ed. Morton Publishing, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.