Bañez, J. E. (2013). Estimation under purposive sampling with auxiliary variable. Philippine Statistician.
Lua i Stíl Chicago (17ú heag.)Bañez, John Erwin. "Estimation Under Purposive Sampling with Auxiliary Variable." Philippine Statistician 2013.
Lua MLA (9ú heag.)Bañez, John Erwin. "Estimation Under Purposive Sampling with Auxiliary Variable." Philippine Statistician, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.