Παραπομπή σε μορφή APA (7η εκδ.)

Librojo, S. (1973). Instructional materials in structural approach to reading comprehension. s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Librojo, Sonia. Instructional Materials in Structural Approach to Reading Comprehension. [Quezon City: s.n.], 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Librojo, Sonia. Instructional Materials in Structural Approach to Reading Comprehension. s.n.], 1973.