Bond, O. F. 1. . . . e., & Castillo, C. 1. . . . e. (1949). Graded Spanish readers. Alternate series. Books 1. Heath.
Lua i Stíl Chicago (17ú heag.)Bond, Otto Ferdinand 1885- ed, agus Carlos 1890- ed Castillo. Graded Spanish Readers. Alternate Series. Books 1. Boston: Heath, 1949.
Lua MLA (9ú heag.)Bond, Otto Ferdinand 1885- ed, agus Carlos 1890- ed Castillo. Graded Spanish Readers. Alternate Series. Books 1. Heath, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.