PRATT, L. N. (1993). Grammar vol 2: Step-by-step. Binarupa Aksara.
芝加哥风格引文PRATT, Lorraine Nicholas. Grammar Vol 2: Step-by-step. Jakarta: Binarupa Aksara, 1993.
MLA引文PRATT, Lorraine Nicholas. Grammar Vol 2: Step-by-step. Binarupa Aksara, 1993.
警告：这些引文格式不一定是100％准确.