St. Mary's College, Tagum, Davao del Norte, & Silfverberg, R. R. (1992). Business directory: Davao province 1992. Business Resource Center, St. Mary's College.
Citace podle Chicago (17th ed.)St. Mary's College, Tagum, Davao del Norte, a Raymunda Rimando Silfverberg. Business Directory: Davao Province 1992. Tagum, Davao: Business Resource Center, St. Mary's College, 1992.
Citace podle MLA (9th ed.)St. Mary's College, Tagum, Davao del Norte, a Raymunda Rimando Silfverberg. Business Directory: Davao Province 1992. Business Resource Center, St. Mary's College, 1992.
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