Perez, J. R. (1971). Problems in the planning and implementation of in-service education program of public elementary schools in the Division of South Cotabato. s.n.].
Chicago-viite (17. p.)Perez, Jose Recto. Problems in the Planning and Implementation of In-service Education Program of Public Elementary Schools in the Division of South Cotabato. [Quezon City: s.n.], 1971.
MLA-viite (9. p.)Perez, Jose Recto. Problems in the Planning and Implementation of In-service Education Program of Public Elementary Schools in the Division of South Cotabato. s.n.], 1971.
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