- The East 1970 Page 293 "Follow the instructions on the next page. Crease the paper tightly, and you will obtain clear-cut J forms. The first in our series is the orizuru (folded crane), which is the most classic of all Japanese origami. The process of folding is not so simple."
- 위키미디어 공용에 관련 미디어 분류가 있습니다.