Ball, M. J., Crystal, D., & Fletcher, P. (2012). Assessing grammar: The languages of LARSP. Multilingual Matters.
芝加哥风格引文Ball, Martin J., David Crystal, 与 Paul Fletcher. Assessing Grammar: The Languages of LARSP. Bristol ; Buffalo: Multilingual Matters, 2012.
MLA引文Ball, Martin J., et al. Assessing Grammar: The Languages of LARSP. Multilingual Matters, 2012.
警告：这些引文格式不一定是100％准确.