Okay kiddo, let me explain what a bibliography is first. A bibliography is a list of books and articles that someone has read and used to learn about a certain topic.
Now, about Kim Jong Un's bibliography. Kim Jong Un is the leader of North Korea. He has a team of people who help him make decisions and give him advice. In order to make good decisions and be informed, Kim Jong Un reads a lot of books and articles about different subjects.
His team keeps track of all the things he has read and puts them all together in a list called a bibliography. It's like keeping a record of the things you have read in a special notebook.
Kim Jong Un's bibliography includes all kinds of books and articles about history, science, politics, and other subjects. By reading all these things, he can learn about different ideas and how other people have solved problems in the past. This helps him make better decisions for his country.