R
Robert F. DeVellis
2 works on record
Works
Scale development
BUNDLE : Fowler : Survey Research Methods 4e + Kremelberg : Practical Statistics + Devellis : Scale Development 2e + Converse : Survey Questions + Spector
BUNDLE : Fowler : Survey Research Methods 4e + Kremelberg : Practical Statistics + Devellis : Scale Development 2e + Converse : Survey Questions + Spector
2010