Zimmermann, F. L., & Wendell, M. (1951). The Interstate compact since 1925. Council of State Governments.
Chicago-viite (17. p.)Zimmermann, Frederick L., ja Mitchell Wendell. The Interstate Compact Since 1925. Chicago: Council of State Governments, 1951.
MLA-viite (8. p.)Zimmermann, Frederick L., ja Mitchell Wendell. The Interstate Compact Since 1925. Council of State Governments, 1951.
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