Further Readings
For more information on sampling techniques, see the following texts:
Cochran, W. G. 1977. Sampling Techniques, 3rd ed. New York: John Wiley and Sons.
Kish, L. 1965. Survey Sampling. New York: John Wiley and Sons.
Kish, L. 1987. Statistical Design for Research. New York: John Wiley and Sons.
Murthy, M. N. 1967. Sampling Theory and Methods. Calcutta, India: Statistical Publishing Society.
Särndal, C., B. Swensson, and J. Wretman. 1992. Model Assisted Survey Sampling. New York: Springer-Verlag.