BEVAN THOMAS. (2013). THEORY OF MACHINES (3RD.). PEARSON.
Lua i Stíl Chicago (17ú heag.)BEVAN THOMAS. THEORY OF MACHINES. 3RD. NEW DELHI: PEARSON, 2013.
Lua MLA (9ú heag.)BEVAN THOMAS. THEORY OF MACHINES. 3RD. PEARSON, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.