Lua APA (7ú heag.)

(1963). Charles Howard: Paintings and drawings ; April 1963.

Lua i Stíl Chicago (17ú heag.)

Charles Howard: Paintings and Drawings ; April 1963. London, 1963.

Lua MLA (8ú heag.)

Charles Howard: Paintings and Drawings ; April 1963. 1963.

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