Crow, J. A., & Crow, G. D. (1967). Panorama de las Américas: [an elementary Spanish reader (3d ed.). Holt, Rinehart and Winston.
Lua i Stíl Chicago (17ú heag.)Crow, John A., agus G. D. Crow. Panorama De Las Américas: [an Elementary Spanish Reader. 3d ed. New York: Holt, Rinehart and Winston, 1967.
Lua MLA (8ú heag.)Crow, John A., agus G. D. Crow. Panorama De Las Américas: [an Elementary Spanish Reader. 3d ed. Holt, Rinehart and Winston, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.