Sibayan, B. P., & Gonzales, A. B. (1977). Language planning and the building of a national language essays in honor of Santiago A. Fonacier on his ninety-second birthday. Linguistic Society of the Philippines and Language Study Center, Philippine Normal College.

Sibayan, Bonifacio P., and Andrew B. Gonzales. Language Planning and the Building of a National Language Essays in Honor of Santiago A. Fonacier on His Ninety-second Birthday. [Manila]: Linguistic Society of the Philippines and Language Study Center, Philippine Normal College, 1977.

Sibayan, Bonifacio P., and Andrew B. Gonzales. Language Planning and the Building of a National Language Essays in Honor of Santiago A. Fonacier on His Ninety-second Birthday. Linguistic Society of the Philippines and Language Study Center, Philippine Normal College, 1977.