APA (7e ed.) Bronvermelding

Beltran, D. G. (1963). A method of determining economical sample size for sample surveys.

Chicago (17e ed.) Bronvermelding

Beltran, Diosdado G. A Method of Determining Economical Sample Size for Sample Surveys. 1963.

MLA (9e ed.) Bronvermelding

Beltran, Diosdado G. A Method of Determining Economical Sample Size for Sample Surveys. 1963.

Let op: Deze citaties zijn niet altijd 100% accuraat.