Gaya APA
Sudman, Seymour. (1982).
Asking Kuestions A Practical Guide to Questionnaire Design (edisi 1).
America:
Publiation Data.
Gaya Chicago
Sudman, Seymour.
Asking Kuestions A Practical Guide to Questionnaire Design.
edisi 1
America:
Publiation Data,
1982.
Text.
Gaya MLA
Sudman, Seymour.
Asking Kuestions A Practical Guide to Questionnaire Design.
edisi 1
America:
Publiation Data,
1982.
Text.
Gaya Turabian
Sudman, Seymour.
Asking Kuestions A Practical Guide to Questionnaire Design.
edisi 1
America:
Publiation Data,
1982.
Print.