APA (7th ed.) Citation

David, I. P. Contributions to ratio method of estimation. University Microfilms.

Chicago Style (17th ed.) Citation

David, Isidro Pineda. Contributions to Ratio Method of Estimation. Ann Arbor: University Microfilms.

MLA (9th ed.) Citation

David, Isidro Pineda. Contributions to Ratio Method of Estimation. University Microfilms.

Warning: These citations may not always be 100% accurate.