Palo Alto Battlefield :
the Battle of Palo Alto and the Mexican-American War.
APA Citation
United States. National Park Service. (1994). Palo Alto Battlefield: the Battle of Palo Alto and the Mexican-American War. [Washington, D.C.?] : National Park Service, U.S. Dept. of the Interior.
MLA Citation
United States. National Park Service. Palo Alto Battlefield: the Battle of Palo Alto And the Mexican-American War. [Washington, D.C.?] : National Park Service, U.S. Dept. of the Interior, 1994.
Warning: These citations may not always be complete (especially for serials).