Swift, P., & Szymanowski, J. (1992). Step-by-step outdoor brickwork: Over twenty easy-to-build projects for your yard and garden. New Holland.
Lua i Stíl Chicago (17ú heag.)Swift, Penny, agus Janek Szymanowski. Step-by-step Outdoor Brickwork: Over Twenty Easy-to-build Projects for Your Yard and Garden. London: New Holland, 1992.
Lua MLA (9ú heag.)Swift, Penny, agus Janek Szymanowski. Step-by-step Outdoor Brickwork: Over Twenty Easy-to-build Projects for Your Yard and Garden. New Holland, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.