Zaide, Gregorio F. Philippine constitutional history and constitutions of modernnations: with full texts of the constitutions of the Philippines and other modern nations/ by Gregorio F. Zaide. - Manila: Modern Book, 1970. - viii, 666 p.; 22 cm. Bibliography: p.655-662. Subjects--Topical Terms: Constitutions. Subjects--Geographic Terms: Philippines--Constitutional history.