APA

United States, . (1968). Compilation of the administrative policies for the national recreation areas, national seashores, national lakeshores, national parkways, national scenic riverways (recreational area category) of the national park system. Washington: Department of the Interior.

Chicago

United States, . 1968. Compilation of the administrative policies for the national recreation areas, national seashores, national lakeshores, national parkways, national scenic riverways (recreational area category) of the national park system. Washington: Department of the Interior.

Harvard

United States, . (1968). Compilation of the administrative policies for the national recreation areas, national seashores, national lakeshores, national parkways, national scenic riverways (recreational area category) of the national park system. Washington: Department of the Interior.

MLA

United States, . Compilation of the administrative policies for the national recreation areas, national seashores, national lakeshores, national parkways, national scenic riverways (recreational area category) of the national park system. Washington: Department of the Interior. 1968.