@inbook {Ryan1988, title = {The measurement of language attitudes}, booktitle = {Sociolinguistics. An International Handbook of the Science of Language and Society}, volume = {2}, year = {1988}, pages = {1068{\textendash}1081}, publisher = {Walter de Gruyter}, organization = {Walter de Gruyter}, address = {Berlin ; New York}, author = {Ryan, Ellen B and Howard Giles and Miles Hewstone}, editor = {Ulrich Ammon and Norbert Dittmar and Klaus J. Mattheier} }