Chiras D. D. Daniel D. (1991). Environmental science: Action for a Sustainable Future (3-d ed.). California, The Benjamin/Cummings Publishing Company, 1991.
Chicago-viite (17. p.)Chiras D. D. Daniel D. Environmental Science: Action for a Sustainable Future. 3-d ed. California, The Benjamin/Cummings Publishing Company, 1991, 1991.
MLA-viite (9. p.)Chiras D. D. Daniel D. Environmental Science: Action for a Sustainable Future. 3-d ed. California, The Benjamin/Cummings Publishing Company, 1991, 1991.
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