Westwater, E. (1960). Simplified Calculus (1st.). English Universities Press Ltd.
芝加哥风格引文Westwater, E. Simplified Calculus. 1st. London: English Universities Press Ltd, 1960.
MLA引文Westwater, E. Simplified Calculus. 1st. English Universities Press Ltd, 1960.
警告：这些引文格式不一定是100％准确.