Collings, G. (1882). A practical treatise on handrailing: Showing new and simple methods for: finding the pitch of the plank... Crosby Lockwood.
Lua i Stíl Chicago (17ú heag.)Collings, George. A Practical Treatise on Handrailing: Showing New and Simple Methods for: Finding the Pitch of the Plank... London: Crosby Lockwood, 1882.
Lua MLA (9ú heag.)Collings, George. A Practical Treatise on Handrailing: Showing New and Simple Methods for: Finding the Pitch of the Plank... Crosby Lockwood, 1882.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.