http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Questionnaire design, interviewing and attitude measurement
First published as 'Questionnaire design and attitude measurement' by Basic Books, Inc., New York in 1966.
Περιλαμβάνει βιβλιογραφικές παραπομπές και ευρετήριο.