Cita APA (7th ed.)

Amen, A. M. (1977). Trajectories on some surfaces [microform]. Photoduplication Service. University of the Philippines Library.

Cita Chicago (17th ed.)

Amen, Alicia Maglaya. Trajectories on Some Surfaces [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.

Cita MLA (9th ed.)

Amen, Alicia Maglaya. Trajectories on Some Surfaces [microform]. Photoduplication Service. University of the Philippines Library, 1977.