Παραπομπή σε μορφή APA (7η εκδ.)

Ward, T. (1971). Programmed instruction for theological education by extension (2ª ed.). Cameo.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ward, Ted. Programmed Instruction for Theological Education by Extension. 2ª ed. Cameo, 1971.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ward, Ted. Programmed Instruction for Theological Education by Extension. 2ª ed. Cameo, 1971.