Yuling Pan and Stephen Lubkemann. (2013). Observing Census Enumeration of Non-English Speaking Households in the 2010 Census: Evaluation Report. Research and Methodology Directorate, Center for Survey Measurement Study Series (Survey Methodology #2013-02). U.S. Census Bureau. Available online at <http://www.census.gov/srd/papers/pdf/ssm2013-02.pdf>.