APA استشهاد

Hansen, M. H. a. (1953). Sample survey methods and theory vol II theory. John wiley.

استشهاد بنمط شيكاغو

Hansen, Morris H...[et al.]. Sample Survey Methods and Theory Vol II Theory. New York: John wiley, 1953.

MLA استشهاد

Hansen, Morris H...[et al.]. Sample Survey Methods and Theory Vol II Theory. John wiley, 1953.