CHANG RICHARD Y. (2001). PASSION PLAN AT WORK: BUILDING A PASSION-DRIVEN ORGANISATION. JOSSEY-BASS PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)CHANG RICHARD Y. PASSION PLAN AT WORK: BUILDING A PASSION-DRIVEN ORGANISATION. SAN FRANCISCO: JOSSEY-BASS PUBLICATIONS, 2001.
Lua MLA (9ú heag.)CHANG RICHARD Y. PASSION PLAN AT WORK: BUILDING A PASSION-DRIVEN ORGANISATION. JOSSEY-BASS PUBLICATIONS, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.