雷世泰. (2009). 以柔克刚: Overpower the stiff with soft tactics. 农村读物出版社.
Dyfyniad Arddull Chicago雷世泰. 以柔克刚: Overpower the Stiff with Soft Tactics. 农村读物出版社, 2009.
Dyfyniad MLA雷世泰. 以柔克刚: Overpower the Stiff with Soft Tactics. 农村读物出版社, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.