APA (7 ম সংস্করণ) উদ্ধৃতি

Beltran, D. G. (1973). A method of determining economical sample size for sample surveys [microform]. Photoduplication Service.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Beltran, Disodado G. A Method of Determining Economical Sample Size for Sample Surveys [microform]. Quezon City: Photoduplication Service, 1973.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Beltran, Disodado G. A Method of Determining Economical Sample Size for Sample Surveys [microform]. Photoduplication Service, 1973.