APA (7th ed.) Citation

(2013). U.S./Mexico sister cities of Presidio, TX and Ojinaga, Chih.: Cross border contingency plan update 2013. [United States Environmental Protection Agency].

Chicago Style (17th ed.) Citation

U.S./Mexico Sister Cities of Presidio, TX and Ojinaga, Chih.: Cross Border Contingency Plan Update 2013. [Washington, D.C.?]: [United States Environmental Protection Agency], 2013.

MLA (9th ed.) Citation

U.S./Mexico Sister Cities of Presidio, TX and Ojinaga, Chih.: Cross Border Contingency Plan Update 2013. [United States Environmental Protection Agency], 2013.