APA-viite (7. p.)
Saris, W. E., & Gallhofer, I. (2014). Design, evaluation, and analysis of questionnaires for survey research (Second edition.). John Wiley & Sons.
Chicago-viite (17. p.)
Saris, Willem E., ja Irmtraud Gallhofer. Design, Evaluation, and Analysis of Questionnaires for Survey Research. Second edition. Hoboken, New Jersey: John Wiley & Sons, 2014.
MLA-viite (9. p.)
Saris, Willem E., ja Irmtraud Gallhofer. Design, Evaluation, and Analysis of Questionnaires for Survey Research. Second edition. John Wiley & Sons, 2014.
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