Have you ever gone fishing? Maybe you have seen people fishing in a river or lake, using a special long stick called a fishing rod. Well, some people like to go fly fishing, which is a special kind of fishing that uses a different kind of fishing rod, called a fly rod.
When people go fly fishing, they use something called a "fly" instead of a regular fishing bait. A fly is a small, handmade lure that looks like a tiny insect or bug.
Now, there are lots of books and articles and websites about fly fishing that people can read to learn more about it. When people write about fly fishing, they often list all the different books and articles and websites they used as sources for their information. This is called a bibliography.
A bibliography is like a list of all the people who helped you with your homework, but for books and articles instead of people. That way, if someone wants to learn more about fly fishing, they can look at the bibliography and find all the different sources of information on the topic.
So, when people write about fly fishing, they make sure to include a list of all the books and articles and websites they used as sources, so that other people can learn more about it too.