Παραπομπή σε μορφή APA (7η εκδ.)

Hernández-Ramírez, M. (2006). Pedagogical model of the system of academic units for distance education. Universidad Autónoma de Tamaulipas.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hernández-Ramírez, Mauricio. Pedagogical Model of the System of Academic Units for Distance Education. Universidad Autónoma de Tamaulipas, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hernández-Ramírez, Mauricio. Pedagogical Model of the System of Academic Units for Distance Education. Universidad Autónoma de Tamaulipas, 2006.