FRANK, M. (1972). Modern english: Exercises for non-native speakers .. Prentice-Hall.
芝加哥风格引文FRANK, Marcella. Modern English: Exercises for Non-native Speakers .. New Jersey: Prentice-Hall, 1972.
MLA引文FRANK, Marcella. Modern English: Exercises for Non-native Speakers .. Prentice-Hall, 1972.
警告：这些引文格式不一定是100％准确.