Heo, Y. Green Frogs: A Korean Folktale. Houghton Mifflin Harcourt (Hmh).
芝加哥风格引文Heo, Yumi. Green Frogs: A Korean Folktale. Houghton Mifflin Harcourt (Hmh).
MLA引文Heo, Yumi. Green Frogs: A Korean Folktale. Houghton Mifflin Harcourt (Hmh).
警告：这些引文格式不一定是100％准确.