Gaya APA

Bond, O, F, &, C, C, , (. (1961). Graded Spanish readers. Alternate series: Books I-V. . Boston: Boston DC Heath & Company.

Gaya MLA

Bond, Otto, F., &, Castillo,, Carlos, , (ed.). "Graded Spanish readers. Alternate series: Books I-V. ". Boston: Boston DC Heath & Company, 1961. Buku.