(美)米歇尔·渥克(Michele Wucker)著. (2017). 灰犀牛：如何应对大概率危机：how to recognize and act on the obvious dangers we ignore. 中信出版社.
Chicago-referens (17:e uppl.)(美)米歇尔·渥克(Michele Wucker)著. 灰犀牛：如何应对大概率危机：how to Recognize and Act on the Obvious Dangers We Ignore. 中信出版社, 2017.
MLA-referens (8:e uppl.)(美)米歇尔·渥克(Michele Wucker)著. 灰犀牛：如何应对大概率危机：how to Recognize and Act on the Obvious Dangers We Ignore. 中信出版社, 2017.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.