GitHub - Sigil-Ebook/Sigil: Sigil is a multi-platform EPUB ebook editor
Are You Wondering Which EPUB Editor To Use In Ubuntu/Linux Mint? Here's " Sigil" For You - NoobsLab | Eye on Digital World
What is ePub? - Publishing Glossaries - Apex Solutions LTD
Create an eBook with Sigil | Update | Integrating Page Edit - YouTube
Sigil's E-Book Editor Is a Bestseller
Sigil 1.5.1 - Neowin
Install Sigil EPub Ebook Editor 0.9.7 in Ubuntu 16.04 and 16.10 - Linuxslaves
Sigil is a free, open-source eBook and ePUB editor for Windows, Linux, and macOS
Sigil alternatives. Top 10 Ebook Creation software
Sigil (application) - Wikipedia
The Lost Sigil eBook Editor Manual for epub and mobi (Kindle) formatting (v.5.3) - Kindle edition by Parrott, Suzanne Fyhrie. Reference Kindle eBooks @ Amazon.com.