Gaya APA

Sudman, S., Fauzan,H.M,Dr.SH.,MM.,MH, . (1982). Asking Questions A Practical Guide to Questionnaire Design . : .

Gaya MLA

Sudman, Seymor., Fauzan,H.M,Dr.SH.,MM.,MH, . "Asking Questions A Practical Guide to Questionnaire Design". : , 1982. Text.