Lohr, S. . L. (1999). Sampling design and analysis. Duxbury Press.
Cita Chicago (17th ed.)Lohr, Sharon L. Sampling Design and Analysis. Pacific Grove, Calif: Duxbury Press, 1999.
Cita MLA (9th ed.)Lohr, Sharon L. Sampling Design and Analysis. Duxbury Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.