Kupchella, C. I., & Kupchella, C. I. (1986). Environmental Science: Living Within System Of Nature / Charles E. Kupchella. Allyn and Bacon.
Cita Chicago Style (17a ed.)Kupchella, Charles I., y Charles I. Kupchella. Environmental Science: Living Within System Of Nature / Charles E. Kupchella. Allyn and Bacon, 1986.
Cita MLA (8a ed.)Kupchella, Charles I., y Charles I. Kupchella. Environmental Science: Living Within System Of Nature / Charles E. Kupchella. Allyn and Bacon, 1986.
Precaución: Estas citas no son 100% exactas.