There are only a few serious books about Moldova, the other one I can recommend is Prince Dimitri Cantemir's Descriptio Moldaviae - a portrait of his land and people. Being a native of Moldova, I can tell I found in King's book a lot of curious information and I did find it hard to agree on certain details, but in general, I believe that no one currently living in Moldova could do a better and unbiased job at describing the historic roots of the long-suffering people that live on this little piece of land.