BEVAN THOMAS. (2010). THEORY OF MACHINES (15 ed.). PEARSON.
Lua i Stíl Chicago (17ú heag.)BEVAN THOMAS. THEORY OF MACHINES. 15 ed. NEW DELHI: PEARSON, 2010.
Lua MLA (9ú heag.)BEVAN THOMAS. THEORY OF MACHINES. 15 ed. PEARSON, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.