MLA

Sudman, Seymour, and Norman M Bradburn. Asking Questions : a Practical Guide to Questionnaire Design. San Francisco (Calif.): Jossey-Bass, 1982.

APA

Sudman, S., & Bradburn, N. M. (1982). Asking questions : a practical guide to questionnaire design. San Francisco (Calif.): Jossey-Bass.

Chicago

Sudman, Seymour, and Norman M. Bradburn. Asking Questions: A Practical Guide to Questionnaire Design. San Francisco (Calif.): Jossey-Bass, 1982.