Tull, D. S. (1973). Survey Research: A Decisional Approach. New York: Intext Press.
Trích dẫn kiểu ChicagoTull, Donald S. Survey Research: A Decisional Approach. New York: Intext Press, 1973.
MLA引文Tull, Donald S. Survey Research: A Decisional Approach. New York: Intext Press, 1973.
警告：这些引文格式不一定是100％准确.