APA (7 वां संस्करण) प्रशस्ति पत्र

Nicdao, R. F., & Koo, G. S. (2014). Positive discipline: Effects on psychological and cognitive engagement and classroom social environment. College of Education, University of the Philippines Diliman.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Nicdao, Rhodora F., और Grace S. Koo. Positive Discipline: Effects on Psychological and Cognitive Engagement and Classroom Social Environment. Quezon City: College of Education, University of the Philippines Diliman, 2014.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Nicdao, Rhodora F., और Grace S. Koo. Positive Discipline: Effects on Psychological and Cognitive Engagement and Classroom Social Environment. College of Education, University of the Philippines Diliman, 2014.

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