APA引文

Kelly, R. (1959). English exercises for secretaries. G.G.Harrap & Co.

芝加哥风格引文

Kelly, R. English Exercises for Secretaries. London: G.G.Harrap & Co, 1959.

MLA引文

Kelly, R. English Exercises for Secretaries. G.G.Harrap & Co, 1959.

警告：这些引文格式不一定是100％准确.