Turk, J. (1989). Home study experiments to accompany Environmental Science (4th.). Harcourt Brace.
Chicago-viite (17. p.)Turk, Jonathan. Home Study Experiments to Accompany Environmental Science. 4th. New York: Harcourt Brace, 1989.
MLA-viite (9. p.)Turk, Jonathan. Home Study Experiments to Accompany Environmental Science. 4th. Harcourt Brace, 1989.
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