Lardizabal, Amparo S. Principles and methods in teaching / by Amparo S. Lardizabal, Alicia S. Bustos, Luz C. Bucu and Maura G. Tangco - Quezon City: Phoenix Publishing House, Inc. c1991. - xiv, 307 p.: 25 cm. Include bibliography. ISBN: 971-06-1419-3 Dewey Class. No.: BFil. 371.102 / P93