(2010). Hansal and gretel(Graded reader level-3). Macaw Books.
芝加哥风格引文Hansal and Gretel(Graded Reader Level-3). Macaw Books, 2010.
MLA引文Hansal and Gretel(Graded Reader Level-3). Macaw Books, 2010.
警告：这些引文格式不一定是100％准确.
APA引文