Williams, A. A. (1970). Basic subjects for the slow learner. Methuen Educational.
芝加哥风格引文Williams, Alec Arthur. Basic Subjects for the Slow Learner. London: Methuen Educational, 1970.
MLA引文Williams, Alec Arthur. Basic Subjects for the Slow Learner. Methuen Educational, 1970.
警告：这些引文格式不一定是100％准确.