एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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