KROHN, R. (1990). English sentence structure. Binarupa Akasara.
芝加哥风格引文KROHN, Robert. English Sentence Structure. Jakarta: Binarupa Akasara, 1990.
MLA引文KROHN, Robert. English Sentence Structure. Binarupa Akasara, 1990.
警告：这些引文格式不一定是100％准确.
APA引文