APA-viite (7. p.)

Ortinero, A. M. (1978). The concept of fact [microform]. Photoduplication Service. University of the Philippines Library.

Chicago-viite (17. p.)

Ortinero, Aniceta M. The Concept of Fact [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1978.

MLA-viite (9. p.)

Ortinero, Aniceta M. The Concept of Fact [microform]. Photoduplication Service. University of the Philippines Library, 1978.