Dyfyniad APA

(2006). Nonresponse Bias in the 2005 National Household Education Surveys Program. U.S. Department of Education.

Dyfyniad Arddull Chicago

Nonresponse Bias in the 2005 National Household Education Surveys Program. U.S. Department of Education, 2006.

Dyfyniad MLA

Nonresponse Bias in the 2005 National Household Education Surveys Program. U.S. Department of Education, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.