Collis, M. (1974). Tackling problems part 1: A unit for teachers. Macdonald Educational.
芝加哥风格引文Collis, Margaret. Tackling Problems Part 1: A Unit for Teachers. London: Macdonald Educational, 1974.
MLA引文Collis, Margaret. Tackling Problems Part 1: A Unit for Teachers. Macdonald Educational, 1974.
警告：这些引文格式不一定是100％准确.