Cochran, William G.
Sampling techniques
John Wiley & Sons, 1977
 Buku Teks SO
Williams, Bill
A Sampler on sampling
John Wiley & Sons, 1978
 Buku Teks SO
Cochran, William G.
Sampling techniques
John Wiley & Sons, 1953
 Buku Teks SO
Cochran, William G.
Sampling techniques
John Wiley , 1963
 Buku Teks SO
Raj, Des
Sampling theory
McGraw-Hill, 1968
 Buku Teks SO