APA引文

Valenzuela Arce, N., & Álvarez Martínez, G. (2013). Historical Echoes of Teaching English in Primary School in Costa Rica PPEIEP: 1979-1987.

Citación estilo Chicago

Valenzuela Arce, Nandayure, y Gustavo Álvarez Martínez. Historical Echoes of Teaching English in Primary School in Costa Rica PPEIEP: 1979-1987. 2013.

MLA引文

Valenzuela Arce, Nandayure, y Gustavo Álvarez Martínez. Historical Echoes of Teaching English in Primary School in Costa Rica PPEIEP: 1979-1987. 2013.

警告：這些引文格式不一定是100％准確.