Croy, P. (1968). Graphic design and reproduction techniques (English ed.].). Focal Press.
Lua i Stíl Chicago (17ú heag.)Croy, Peter. Graphic Design and Reproduction Techniques. English ed.]. London: Focal Press, 1968.
Lua MLA (9ú heag.)Croy, Peter. Graphic Design and Reproduction Techniques. English ed.]. Focal Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.