@article{MunzertSelb2020, author = {Simon Munzert and Peter Selb}, title = {Measuring Political Knowledge in Web-Based Surveys: An Experimental Validation of Visual Versus Verbal Instruments}, journal = {Social Science Computer Review}, volume = {25}, number = {2}, pages = {167 -- 183}, doi = {10.1177/0894439315616325}, year = {2020}, }