While a generic EPUB may not be listed on all major platforms, the Kindle eBook version is widely available and included with Kindle Unlimited subscriptions.
A physical Print-on-Demand version is also available for those looking for a "proper paper" copy. Una Navidad De Cuento Carmen Amil epub
Readers on Goodreads and Babelio describe it as an addictive and cheerful holiday read. Books by Carmen Amil (Author of Iridiscencia) - Goodreads While a generic EPUB may not be listed