Gaya APA
Sudman, Seymour dkk. (1982).
Asking Questions A Practical Guide to Questionnaire Design .
Jossey-Bass Inc.Publisher:
America.
Gaya Chicago
Sudman, Seymour dkk.
Asking Questions A Practical Guide to Questionnaire Design.
Jossey-Bass Inc.Publisher:
America,
1982.
Text.
Gaya MLA
Sudman, Seymour dkk.
Asking Questions A Practical Guide to Questionnaire Design.
Jossey-Bass Inc.Publisher:
America,
1982.
Text.
Gaya Turabian
Sudman, Seymour dkk.
Asking Questions A Practical Guide to Questionnaire Design.
Jossey-Bass Inc.Publisher:
America,
1982.
Print.