Oh dear!
(making notes to self)
Most of the classic stories are on Target books, but they are all out of print. Sometimes one may find a few at used books stores here and Amazon is a great source for them. There are some very nice ones out with characters from the new series with stories that are not on television, just made for the novels.
Just remembered, if you can find any BBC ones that were out in the late 90's, they have stories that are exclusive to the books with classic characters. They are VERY hard to find and all out of print. I have 2 and that's only because I bought them when they were new. Went to get more later and they had all been pulled. Don't know why really, the stories are great. Especially one called the Face Eater aka Flesh Eater. Rather scary and a riveting tale.
Any view of things that is not strange, is false.