Gaya APA
Sudman, S., Fauzan,H.M,Dr.SH.,MM.,MH, . (1982).
Asking Questions A Practical Guide to Questionnaire Design .
Illionis:
IctiarBaru Van Hove.
Gaya MLA
Sudman, Seymor., Fauzan,H.M,Dr.SH.,MM.,MH, .
"Asking Questions A Practical Guide to Questionnaire Design".
Illionis:
IctiarBaru Van Hove,
1982.
Text.