APA (7th ed.) Citation

Sobczak, R. V. (2010). Big Thicket National Preserve. U.S. Department of the Interior, National Park Service, Natural Resource Program Center.

Chicago Style (17th ed.) Citation

Sobczak, Robert Valentine. Big Thicket National Preserve. Fort Collins, Colorado: U.S. Department of the Interior, National Park Service, Natural Resource Program Center, 2010.

MLA (9th ed.) Citation

Sobczak, Robert Valentine. Big Thicket National Preserve. U.S. Department of the Interior, National Park Service, Natural Resource Program Center, 2010.