APA-viite (7. p.)
ebrary, Inc, & Hassell, S. (2010). An assessment of the U.S. Environmental Protection Agency's National Environmental Performance Track Program. RAND.
Chicago-viite (17. p.)
ebrary, Inc, ja Scott Hassell. An Assessment of the U.S. Environmental Protection Agency's National Environmental Performance Track Program. Santa Monica, CA: RAND, 2010.
MLA-viite (9. p.)
ebrary, Inc, ja Scott Hassell. An Assessment of the U.S. Environmental Protection Agency's National Environmental Performance Track Program. RAND, 2010.
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