普林格 & 亨德森. (2017). 蛙: Frogs! Strange and wonderful. 中国青年出版社.
Dyfyniad Arddull Chicago普林格 and 亨德森. 蛙: Frogs! Strange and Wonderful. 中国青年出版社, 2017.
Dyfyniad MLA普林格 and 亨德森. 蛙: Frogs! Strange and Wonderful. 中国青年出版社, 2017.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.