Minchin, H. C., & Gill, E. (2013). Gill, Eric - Minchin, H. Cotton, Collection. DigitalGeorgetown.
Lua i Stíl Chicago (17ú heag.)Minchin, H. Cotton, agus Eric Gill. Gill, Eric - Minchin, H. Cotton, Collection. Washington, D.C.: DigitalGeorgetown, 2013.
Lua MLA (8ú heag.)Minchin, H. Cotton, agus Eric Gill. Gill, Eric - Minchin, H. Cotton, Collection. DigitalGeorgetown, 2013.
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