419430 Johnson, B. E. E., & Johnson, H. (1987). Spelling help. Oxford : Basil Blackwell.
芝加哥风格引文419430 Johnson, B. E. E., 与 H. Johnson. Spelling Help. Oxford : Basil Blackwell, 1987.
MLA引文419430 Johnson, B. E. E., 与 H. Johnson. Spelling Help. Oxford : Basil Blackwell, 1987.
警告：这些引文格式不一定是100％准确.