Little Horus

From Author Wars - https://authorwars.com/books/little-horus-1327414.html

Overview:

Unknown. Age of Darkness (Unknown, Dan Abnett, Black Library, ISBN-10: 9781849700375, $8.99, 408+[5] pages, Paperback, Anthology)
Unknown. Age of Darkness (Unknown, Dan Abnett, Black Library / BL Publishing (US), ISBN-10: 9781849700375, $8.99, 408 pages, Paperback, Anthology)
2011 . Age of Darkness (2011, Dan Abnett, Black Library / BL Publishing (UK), ISBN-10: 9781849700368, £7.99, 408 pages, Paperback, Anthology)
2011 . The Horus Heresy Limited Edition Audio Boxset (2011, Dan Abnett, Black Library, ISBN-10: 9781849702188, £60.00, audio CD, Omnibus)
2016 . The Horus Heresy: Volume Four (2016, Dan Abnett, Black Library, £34.99, ebook, Omnibus)
2016 . Little Horus (2016, Dan Abnett, Black Library, £1.99, ebook, Chapter Book)
2016 . Age of Darkness (2016, Dan Abnett, Black Library, ISBN-10: 9780857871534, £9.99, ebook, Anthology)
2017 . Age of Darkness (2017, Dan Abnett, Black Library, $32.71, digital audio download, Anthology)
2018 . The Horus Heresy Audio Collection: Volume 1 (2018, Dan Abnett, Black Library, $32.71, digital audio download, Anthology)
2020 . Lord of the Dark Millennium (2020, Dan Abnett, Black Library, ISBN-10: 9781789993233, $16.99, pages, ebook, Collection)
2020 . Lord of the Dark Millennium (2020, Dan Abnett, Black Library, ISBN-10: 9781789991383, £18.00, 667 pages, Hardcover, Collection)
2021 . Lord of the Dark Millennium (2021, Dan Abnett, Games Workshop, ISBN-10: 9781789998337, $18.00, 700 pages, Trade Paperback, Collection)