APA (7 वां संस्करण) प्रशस्ति पत्र

Philippines. Department of Tourism. Region XIII, Caraga Region. (1997). Caraga Region XIII 1997-1998 tourism situationer. Department of Tourism.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Philippines. Department of Tourism. Region XIII, Caraga Region. Caraga Region XIII 1997-1998 Tourism Situationer. Butuan City: Department of Tourism, 1997.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Philippines. Department of Tourism. Region XIII, Caraga Region. Caraga Region XIII 1997-1998 Tourism Situationer. Department of Tourism, 1997.