Lua APA (7ú heag.)

Brach, P. (1968). Philip Guston: Looking at Guston. Art in America.

Lua i Stíl Chicago (17ú heag.)

Brach, Paul. "Philip Guston: Looking at Guston." Art in America 1968.

Lua MLA (8ú heag.)

Brach, Paul. "Philip Guston: Looking at Guston." Art in America, 1968.

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