Philippine Industrial Relations Society & Sibal, J. . V. (2012). Sustainable employment relationships: Book 2. Central Book Supply.
Lua i Stíl Chicago (17ú heag.)Philippine Industrial Relations Society agus Jorge V. Sibal. Sustainable Employment Relationships: Book 2. Quezon City: Central Book Supply, 2012.
Lua MLA (9ú heag.)Philippine Industrial Relations Society agus Jorge V. Sibal. Sustainable Employment Relationships: Book 2. Central Book Supply, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.