@techreport{Ellis1999,
author = {Ellis, C.H. and Krosnick, J.A.},
title= {Comparing telephone and face-to-face surveys in terms of sample representativeness: A meta-analysis of demographics characteristics},
year = {1999},
URL = {https://electionstudies.org/wp-content/uploads/2018/04/nes010871.pdf},
publisher = {Ohio State University},
address = {Columbus, OH},
}