Mercado, R. P. (1976). Consumer's mathematics (elective for the high schools) with cooperatives. Phil. Book Co.
Lua i Stíl Chicago (17ú heag.)Mercado, Rosario P. Consumer's Mathematics (elective for the High Schools) with Cooperatives. Manila: Phil. Book Co, 1976.
Lua MLA (9ú heag.)Mercado, Rosario P. Consumer's Mathematics (elective for the High Schools) with Cooperatives. Phil. Book Co, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.