Gilbert, I. (2014). Independent thinking. Independent Thinking Press.
Lua i Stíl Chicago (17ú heag.)Gilbert, Ian. Independent Thinking. Carmarthen, Wales: Independent Thinking Press, 2014.
Lua MLA (9ú heag.)Gilbert, Ian. Independent Thinking. Independent Thinking Press, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.