APA (7 वां संस्करण) प्रशस्ति पत्र

Varela, M. B. (2000). PCCI and the economic paradigm shift IN Follow-thru [column]. City Life.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Varela, Miguel B. "PCCI and the Economic Paradigm Shift IN Follow-thru [column]." City Life 2000.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Varela, Miguel B. "PCCI and the Economic Paradigm Shift IN Follow-thru [column]." City Life, 2000.