APA (7 वां संस्करण) प्रशस्ति पत्र

(2007). TeleTech Lipa Delivery Center: Providing thousands of full-time, global jobs to the region. Manila Bulletin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

"TeleTech Lipa Delivery Center: Providing Thousands of Full-time, Global Jobs to the Region." Manila Bulletin 2007.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

"TeleTech Lipa Delivery Center: Providing Thousands of Full-time, Global Jobs to the Region." Manila Bulletin, 2007.