Fernández، Leticia؛ Amastae، Jon (1 سبتمبر 2006). "Transborder use of medical services among Mexican American students in a U.S. border university". Journal of Borderlands Studies. ج. 21 ع. 2: 77–87. DOI:10.1080/08865655.2006.9695661. ISSN:0886-5655. S2CID:143982920.
epa.gov
"La Paz Agreement"(PDF). Epa.gov. مؤرشف من الأصل(PDF) في 2021-04-27. اطلع عليه بتاريخ 2018-04-09.
Fernández، Leticia؛ Amastae، Jon (1 سبتمبر 2006). "Transborder use of medical services among Mexican American students in a U.S. border university". Journal of Borderlands Studies. ج. 21 ع. 2: 77–87. DOI:10.1080/08865655.2006.9695661. ISSN:0886-5655. S2CID:143982920.
Fernández، Leticia؛ Amastae، Jon (1 سبتمبر 2006). "Transborder use of medical services among Mexican American students in a U.S. border university". Journal of Borderlands Studies. ج. 21 ع. 2: 77–87. DOI:10.1080/08865655.2006.9695661. ISSN:0886-5655. S2CID:143982920.