Παραπομπή σε μορφή APA (7η εκδ.)

Ortigas, C. D. (1997). Group process and the industries methods: Theory and practices in the Philippines (3rd ed.). Ateneo de Manila University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ortigas, Carmela D. Group Process and the Industries Methods: Theory and Practices in the Philippines. 3rd ed. Quezon City: Ateneo de Manila University Press, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ortigas, Carmela D. Group Process and the Industries Methods: Theory and Practices in the Philippines. 3rd ed. Ateneo de Manila University Press, 1997.