Ortigas, C. D. (1997). Group process and the industries methods: Theory and practices in the Philippines (3rd ed.). Ateneo de Manila University Press.
Citace podle Chicago (17th ed.)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.
Citace podle MLA (9th ed.)Ortigas, Carmela D. Group Process and the Industries Methods: Theory and Practices in the Philippines. 3rd ed. Ateneo de Manila University Press, 1997.
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