Lua APA (7ú heag.)

Penny, N., & Johnson, R. F. (1989). Lucian Freud: Works on paper. Thames and Hudson.

Lua i Stíl Chicago (17ú heag.)

Penny, Nicholas, agus Robert Flynn Johnson. Lucian Freud: Works on Paper. London: Thames and Hudson, 1989.

Lua MLA (8ú heag.)

Penny, Nicholas, agus Robert Flynn Johnson. Lucian Freud: Works on Paper. Thames and Hudson, 1989.

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