APA aipamena

Trinidad, F. (1965). An investigation of supervisory practices of department heads of science in the Manila public secondary schools. [s.n.].

Chicago Style aipamena

Trinidad, Felicisima. An Investigation of Supervisory Practices of Department Heads of Science in the Manila Public Secondary Schools. New Brunswick, N.J: [s.n.], 1965.

MLA aipamena

Trinidad, Felicisima. An Investigation of Supervisory Practices of Department Heads of Science in the Manila Public Secondary Schools. [s.n.], 1965.