Panlasigui, I. 1. (1971). The language problems of the Philippines. Delco Pub.
Cita Chicago (17th ed.)Panlasigui, Isidoro 1891. The Language Problems of the Philippines. Quezon City: Delco Pub, 1971.
Cita MLA (9th ed.)Panlasigui, Isidoro 1891. The Language Problems of the Philippines. Delco Pub, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.