楚材. (2020). 俞敏洪：在不如意的世界里全力以赴: Go all out in the unpleasant world. 文汇出版社.
Dyfyniad Arddull Chicago楚材. 俞敏洪：在不如意的世界里全力以赴: Go All Out in the Unpleasant World. 文汇出版社, 2020.
Dyfyniad MLA楚材. 俞敏洪：在不如意的世界里全力以赴: Go All Out in the Unpleasant World. 文汇出版社, 2020.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.