Somers, P. P. (1998). Editorial cartooning and caricature: A reference guide. Greenwood Press.
Lua i Stíl Chicago (17ú heag.)Somers, Paul P. Editorial Cartooning and Caricature: A Reference Guide. Westport, Conn: Greenwood Press, 1998.
Lua MLA (9ú heag.)Somers, Paul P. Editorial Cartooning and Caricature: A Reference Guide. Greenwood Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.