Sta. Maria, A. C. (1998). College mathematics text/workbook (2nd ed.). National Book Store.
Lua i Stíl Chicago (17ú heag.)Sta. Maria, Antonina C. College Mathematics Text/workbook. 2nd ed. Mandaluyong City: National Book Store, 1998.
Lua MLA (9ú heag.)Sta. Maria, Antonina C. College Mathematics Text/workbook. 2nd ed. National Book Store, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.