Theoretical statistics

Can you help me with my paper on theoretical statistics?

Statistics Denmark is happy to answer questions about statistics that we produce and, if possible, about publications by other domestic and foreign producers of statistics.

Unfortunately, we are unable to take on general questions about theoretical statistics.
Instead you can try your local public library, the CBS Library or the AU Library, all of which have literature on this subject.

At bibliotek.dk, which is a common website for Danish libraries, you can search for books and articles on theoretical statistics and see in which libraries the material is available.

The textbook "Praktisk statistik for samfundsvidenskaberne" (in Danish) on practical statistics for social sciences can give you a good introduction, for example.