Warwick, D. P. (1975). The sample survey: Theory and practice. McGraw-Hill.
Chicago Edition CitationWarwick, Donald P. The Sample Survey: Theory and Practice. New York: McGraw-Hill, 1975.
Cita MLAWarwick, Donald P. The Sample Survey: Theory and Practice. McGraw-Hill, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.