RT Journal Article SR Electronic T1 Quota Controls in Survey Research JF Journal of Advertising Research JO J Advert Res FD WARC SP 368 OP 379 DO 10.2501/JAR-2015-020 VO 55 IS 4 A1 Steven H. Gittelman A1 Randall K. Thomas A1 Paul J. Lavrakas A1 Victor Lange YR 2015 UL http://www.journalofadvertisingresearch.com/content/55/4/368.abstract AB