Ramírez Salas, M. (2004). English Teachers as materials developers. Universidad de Costa Rica.
Citazione stile Chigago Style (17a edizione)Ramírez Salas, Marlene. English Teachers as Materials Developers. Universidad de Costa Rica, 2004.
Citatione MLA (9a ed.)Ramírez Salas, Marlene. English Teachers as Materials Developers. Universidad de Costa Rica, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.