``In general words questionnaire refers to a device for securing answers to questions by using a form which the respondent fills in himself' . Who has defined questionnaire in these words?
``In general words questionnaire refers to a device for securing answers to questions by using a form which the respondent fills in himself' . Who has defined questionnaire in these words? 1). Goode and Hatt 2). Goode and Scates 3). Barr, Davis and Johnson 4). John W. Best.