@article{Singer1983,
author = {Singer, E. and Frankel, M.R. and Glassman, M.B.},
title= {The effect of interviewer characteristics and expectations on response},
year = {1983},
doi = {10.1086/268767},
journal = {Public Opinion Quarterly},
volume = {47},
number = {1},
pages = {68--83},
}