APA

Terluin B., Brouwers E. P. M., Marchand M. A. G. & de Vet H. C. W. (20190828). Assessing the equivalence of Web-based and paper-and-pencil questionnaires using differential item and test functioning (DIF and DTF) analysis: a case of the Four-Dimensional Symptom Questionnaire (4DSQ). : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation.

Chicago

Terluin Berend, Brouwers Evelien P M, Marchand Miquelle A G and de Vet Henrica C W. 20190828. Assessing the equivalence of Web-based and paper-and-pencil questionnaires using differential item and test functioning (DIF and DTF) analysis: a case of the Four-Dimensional Symptom Questionnaire (4DSQ). : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation.

Harvard

Terluin B., Brouwers E. P. M., Marchand M. A. G. and de Vet H. C. W. (20190828). Assessing the equivalence of Web-based and paper-and-pencil questionnaires using differential item and test functioning (DIF and DTF) analysis: a case of the Four-Dimensional Symptom Questionnaire (4DSQ). : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation.

MLA

Terluin Berend, Brouwers Evelien P M, Marchand Miquelle A G and de Vet Henrica C W. Assessing the equivalence of Web-based and paper-and-pencil questionnaires using differential item and test functioning (DIF and DTF) analysis: a case of the Four-Dimensional Symptom Questionnaire (4DSQ). : Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation. 20190828.