Instructional Objectives Exchange. (1972). Language arts : decoding skills: Grades K-12 (Rev. ed.). Instructional Objectives Exchange.
Chicago Style aipamenaInstructional Objectives Exchange. Language Arts : Decoding Skills: Grades K-12. Rev. ed. Los Angeles, Calif.: Instructional Objectives Exchange, 1972.
MLA aipamenaInstructional Objectives Exchange. Language Arts : Decoding Skills: Grades K-12. Rev. ed. Instructional Objectives Exchange, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.