Valenzuela Arce, N., & Álvarez Martínez, G. (2013). Historical Echoes of Teaching English in Primary School in Costa Rica PPEIEP: 1979-1987.
استشهاد بنمط شيكاغوValenzuela Arce, Nandayure, و Gustavo Álvarez Martínez. Historical Echoes of Teaching English in Primary School in Costa Rica PPEIEP: 1979-1987. 2013.
MLA استشهادValenzuela Arce, Nandayure, و Gustavo Álvarez Martínez. Historical Echoes of Teaching English in Primary School in Costa Rica PPEIEP: 1979-1987. 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.