Ramírez Salas, M. (2004). English Teachers as materials developers. Universidad de Costa Rica.
芝加哥风格引文Ramírez Salas, Marlene. English Teachers as Materials Developers. Universidad de Costa Rica, 2004.
MLA引文Ramírez Salas, Marlene. English Teachers as Materials Developers. Universidad de Costa Rica, 2004.
警告：这些引文格式不一定是100％准确.