Cita APA (7a ed.)

Padilla, G. B. (1977). A correlation between the liquid limit and the fall-cone penetration [microform]. Photoduplication Service. University of the Philippines Library.

Cita Chicago Style (17a ed.)

Padilla, George B. A Correlation Between the Liquid Limit and the Fall-cone Penetration [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.

Cita MLA (9a ed.)

Padilla, George B. A Correlation Between the Liquid Limit and the Fall-cone Penetration [microform]. Photoduplication Service. University of the Philippines Library, 1977.