United States. National Park Service. (1989). Sleeping Bear Dunes National Lakeshore: Old Indian hiking trail : a 2.2 mile loop and a 2.25 mile loop leading to a view of the Lake Michigan beach (Rev. 3-89.). [National Park Service].
Chicago Style (17th ed.) CitationUnited States. National Park Service. Sleeping Bear Dunes National Lakeshore: Old Indian Hiking Trail : A 2.2 Mile Loop and a 2.25 Mile Loop Leading to a View of the Lake Michigan Beach. Rev. 3-89. [Washington, D.C.?]: [National Park Service], 1989.
MLA (9th ed.) CitationUnited States. National Park Service. Sleeping Bear Dunes National Lakeshore: Old Indian Hiking Trail : A 2.2 Mile Loop and a 2.25 Mile Loop Leading to a View of the Lake Michigan Beach. Rev. 3-89. [National Park Service], 1989.
Warning: These citations may not always be 100% accurate.