Saldaña Cepeda, P. E., Luisana Del Carmen Vallejos Castillo ;, & De Gracia, E. (2015). Cammon problems inside the classroom that the teacher has to face and manage when teaching english as a second language at Jose María Roy elementary school in David city. David, Panamá: UDELAS.

Saldaña Cepeda, Patricia Enith, Luisana Del Carmen Vallejos Castillo, and Edward De Gracia. Cammon Problems Inside the Classroom That the Teacher Has to Face and Manage When Teaching English As a Second Language At Jose María Roy Elementary School in David City. David, Panamá: UDELAS, 2015.

Saldaña Cepeda, Patricia Enith, Luisana Del Carmen Vallejos Castillo, and Edward De Gracia. Cammon Problems Inside the Classroom That the Teacher Has to Face and Manage When Teaching English As a Second Language At Jose María Roy Elementary School in David City. David, Panamá: UDELAS, 2015.