Frei, E. J. (1947). Tagalog as the Philippine national language. s.n.
Chicago Style aipamenaFrei, Ernest John. Tagalog as the Philippine National Language. [Conn: s.n, 1947.
MLA aipamenaFrei, Ernest John. Tagalog as the Philippine National Language. s.n, 1947.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.