(美)拿破仑·希尔著. (2017). 致富的勇气. 北京联合出版社.
Lua i Stíl Chicago (17ú heag.)(美)拿破仑·希尔著. 致富的勇气. 北京联合出版社, 2017.
Lua MLA (8ú heag.)(美)拿破仑·希尔著. 致富的勇气. 北京联合出版社, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)