Verzosa, P. R. (1974). Trends in ethics [microform]. Photoduplication Service,University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)Verzosa, Paul Rodriquez. Trends in Ethics [microform]. Quezon City: Photoduplication Service,University of the Philippines Library, 1974.
Citatione MLA (9a ed.)Verzosa, Paul Rodriquez. Trends in Ethics [microform]. Photoduplication Service,University of the Philippines Library, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.