Murthy, M. (1977). Sampling: Thoery and methods. Statistical publishing society.
Dyfyniad Arddull ChicagoMurthy, M.N. Sampling: Thoery and Methods. Calcutta: Statistical publishing society, 1977.
Dyfyniad MLAMurthy, M.N. Sampling: Thoery and Methods. Statistical publishing society, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.