Summer Institute of Linguistics, Dean, J., & Ontic, D. (1955). Gisak: (a translation of the pre-primer Pepe). Summer Institute of Linguistics affiliated with the University of North Dakota in cooperation with the Bureau of Public Schools and the Institute of National Language of the Department of Education.

Summer Institute of Linguistics, James Dean, and Danton Ontic. Gisak: (a Translation of the Pre-primer Pepe). Manila: Summer Institute of Linguistics affiliated with the University of North Dakota in cooperation with the Bureau of Public Schools and the Institute of National Language of the Department of Education, 1955.

Summer Institute of Linguistics, et al. Gisak: (a Translation of the Pre-primer Pepe). Summer Institute of Linguistics affiliated with the University of North Dakota in cooperation with the Bureau of Public Schools and the Institute of National Language of the Department of Education, 1955.