Παραπομπή APA

Raj, D., & Chandhok., P. (1988). Sample survey theory. Narosa.

Παραπομπή Chicago Style

Raj, Des, και Promod Chandhok. Sample Survey Theory. hennai: Narosa, 1988.

Παραπομπή MLA

Raj, Des, και Promod Chandhok. Sample Survey Theory. Narosa, 1988.