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