The Albanians by Miranda Vickers covers the 20th Century - so the fall of the Ottoman empire, the emergence of a national identity and then the rise and fall of Communism.
Finding non-academic books about Albanian history is tricky because frankly there is still a lot of bias. For example this book on Hoxha was written by someone who clearly has an axe to grind and obviously wanted to write an anti-Hoxha book.
If you find any good ones please let me know!