APA aipamena

Alturas, G. S. An Empirical validation of instructional materials on methods of improving water potability.

Chicago Style aipamena

Alturas, Gerarda S. An Empirical Validation of Instructional Materials on Methods of Improving Water Potability. Quezon City, 1978.

MLA aipamena

Alturas, Gerarda S. An Empirical Validation of Instructional Materials on Methods of Improving Water Potability.