Opeña, M. L. R. (1998). The conversion of Busali Farm: Its political implications to the province of Biliran.
Chicago-referens (17:e uppl.)Opeña, Mario Lydinno R. The Conversion of Busali Farm: Its Political Implications to the Province of Biliran. 1998.
MLA-referens (9:e uppl.)Opeña, Mario Lydinno R. The Conversion of Busali Farm: Its Political Implications to the Province of Biliran. 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.