Παραπομπή APA

Raj,Des, & Chandhok, P. (1999). Sample survey theory. Narosa.

Παραπομπή Chicago Style

Raj,Des, και Promod Chandhok. Sample Survey Theory. New Delhi: Narosa, 1999.

Παραπομπή MLA

Raj,Des, και Promod Chandhok. Sample Survey Theory. Narosa, 1999.