세부 시티. 아르세오덤라오, T. , March. 블루스를 없애는 인디고 무역. Inquirer.Net에서 검색됨 httpbusiness.inquirer.netindigotradegettingridoftheblues 브리태니커, T. E. , June.

Cebu City. ArceoDumlao, T. , March. Indigo trade getting rid of the blues. Retrieved from Inquirer.Net httpbusiness.inquirer.netindigotradegettingridoftheblues Britannica, T. E. , June.