Havas, G., & Vaughan-Lee, M. (2009). On counterexamples to the Hughes conjecture. Elsevier.
Lua i Stíl Chicago (17ú heag.)Havas, G., agus M. Vaughan-Lee. On Counterexamples to the Hughes Conjecture. Elsevier, 2009.
Lua MLA (9ú heag.)Havas, G., agus M. Vaughan-Lee. On Counterexamples to the Hughes Conjecture. Elsevier, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.