APA ציטוט

Oppenheim, A. N. (1966). Questionnaire design and attitude measurement. Heinemann.

Chicago Style (17th ed.) Citation

Oppenheim, A. N. Questionnaire Design and Attitude Measurement. London: Heinemann, 1966.

ציטוט MLA

Oppenheim, A. N. Questionnaire Design and Attitude Measurement. Heinemann, 1966.