- http://www.wonkeedonkeetools.co.uk/files/what-are-hand-and-flat-files/
- "What Are Hand and Flat Files?" What Are Hand and Flat Files?GloverSure Ltd., n.d. Web. 28 Sept. 2016.
- http://www.homedepot.com/p/Nicholson-6-in-Bastard-Cut-Flat-Mill-File-21867L/100177575
- Donald, Lsnai, Gerry, Bob, Pcmm, DavidKL70, Ciana, and HDrock. "Nicholson 6 In. Bastard-Cut Flat Mill File-21867L - The Home Depot." The Home Depot. Home Depot, 12 July 2016. Web. 28 Sept. 2016.
- http://www.wisegeek.com/what-is-a-round-file.htm
- Scott, Paul, and R. Halprin. WiseGeek. Conjecture, n.d. Web. 28 Sept. 2016.
- http://www.homedepot.com/s/round%20file?NCNI-5
- "Round File." The Home Depot. Home Depot, n.d. Web. 29 Sept. 2016.
- http://www.wisegeek.com/what-is-a-triangular-file.htm
- Roland, Patrick, and A. Joseph. "What Is a Triangular File?" WiseGeek. Conjecture, n.d. Web. 28 Sept. 2016.
- https://www.grainger.com/product/WESTWARD-Machinist-s-Scraper-WP6158290/_/N-1z0drsx?s_pp=false
- "Machinist's Scraper." Grainger. N.p., n.d. Web.
- https://www.amazon.com/LUTZ-LU999-File-Card-Brush/dp/B007IGOGJ0
- "Robot Check." Robot Check. Amazon, n.d. Web. 29 Sept. 2016.
- http://www.homedepot.com/s/round%20file?NCNI-5
- "Round File." The Home Depot. Home Depot, n.d. Web. 29 Sept. 2016.
- http://www.wisegeek.com/what-is-a-triangular-file.htm
- Roland, Patrick, and A. Joseph. "What Is a Triangular File." WiseGeek. Conjecture, n.d. Web. 29 Sept. 2016.