The law of citations is like saying "if you want to give credit to someone for an idea or information, you need to tell other people where you got it from."
It's like when you make a drawing and your friend says "wow that's cool, I want to draw like you!" You can tell them "I got my idea from a book I read" or "I learned how to draw from my art teacher." That way your friend knows where to go if they want to learn more about your drawing or how to draw like you.
In the same way, if someone writes an article or book and uses information or ideas from someone else's work, they need to tell other people where they got those ideas or information from. This is called a citation. They usually put the citation in the article or book so that others can find the original source if they want to learn more.
So, imagine you are writing a report about dogs. You learned some interesting facts about dogs from a book you read. You can't just take those facts and use them in your report without telling people where you found the information. That's not fair to the person who wrote the book, because they did all the work to find and research those facts.
Instead, you need to make a citation by saying "According to (Name of Book), dogs can smell up to 10,000 times better than humans." That way people reading your report know where you got that information from and can go to the book if they want to learn more.
Following the law of citations is important because it helps give credit to the people who worked hard to come up with the ideas or information. It also helps make sure that people can find the original source of the information, which is important if they want to learn more or do their own research.