Des Raj & Chandhok, P. (1998). Sample survey Theory. Narosa.
Chicago Edition CitationDes Raj i Promod Chandhok. Sample Survey Theory. New Delhi: Narosa, 1998.
Cita MLADes Raj i Promod Chandhok. Sample Survey Theory. Narosa, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.