HSIAO CHENG. (2003). ANALYSIS OF PANEL DATA (2ND.). CAMBRIDGE UNIVERSITY PRESS.
Lua i Stíl Chicago (17ú heag.)HSIAO CHENG. ANALYSIS OF PANEL DATA. 2ND. CAMBRIDGE: CAMBRIDGE UNIVERSITY PRESS, 2003.
Lua MLA (9ú heag.)HSIAO CHENG. ANALYSIS OF PANEL DATA. 2ND. CAMBRIDGE UNIVERSITY PRESS, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.