Cita APA (7th ed.)

Acuña Somarribas, D. y. . V. V. (1999). Oral activities used in ten third grade classrooms in public schools of the metropolitan area in Costa Rica. Universidad de CostaRica, Escuela de Lenguas Modernas.

Cita Chicago (17th ed.)

Acuña Somarribas, Diego y Vargas Vargas. Oral Activities Used in Ten Third Grade Classrooms in Public Schools of the Metropolitan Area in Costa Rica. San José, Costa Rica: Universidad de CostaRica, Escuela de Lenguas Modernas, 1999.

Cita MLA (9th ed.)

Acuña Somarribas, Diego y Vargas Vargas. Oral Activities Used in Ten Third Grade Classrooms in Public Schools of the Metropolitan Area in Costa Rica. Universidad de CostaRica, Escuela de Lenguas Modernas, 1999.