Calmenson Stephanie. The frog principal. Scholastic.
芝加哥风格引文Calmenson Stephanie. The Frog Principal. Scholastic.
MLA引文Calmenson Stephanie. The Frog Principal. Scholastic.
警告：这些引文格式不一定是100％准确.
APA引文
Calmenson Stephanie. The frog principal. Scholastic.
芝加哥风格引文Calmenson Stephanie. The Frog Principal. Scholastic.
MLA引文Calmenson Stephanie. The Frog Principal. Scholastic.