Cita APA (7a ed.)

Bond, O. F. 1. . . . e., & Castillo, C. 1. . . . e. (1949). Graded Spanish readers. Alternate series. Books 1. Heath.

Cita Chicago Style (17a ed.)

Bond, Otto Ferdinand 1885- ed, y Carlos 1890- ed Castillo. Graded Spanish Readers. Alternate Series. Books 1. Boston: Heath, 1949.

Cita MLA (9a ed.)

Bond, Otto Ferdinand 1885- ed, y Carlos 1890- ed Castillo. Graded Spanish Readers. Alternate Series. Books 1. Heath, 1949.