Lua APA (7ú heag.)

Hopkins, R. Sculpture: Robert Hopkins. The Oxford handbook of aesthetics.(2003).

Lua i Stíl Chicago (17ú heag.)

Hopkins, Robert. "Sculpture: Robert Hopkins." The Oxford Handbook of Aesthetics.(2003) .

Lua MLA (8ú heag.)

Hopkins, Robert. "Sculpture: Robert Hopkins." The Oxford Handbook of Aesthetics.(2003), .

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.