Citation indexing is a method used to track how often academic papers and articles are referenced by other works. This process helps researchers identify influential studies and understand the impact of specific publications within a field. Citation indexes compile data from various sources, allowing users to see connections between different pieces of research. One of the most well-known citation indexing services is the Web of Science, which provides access to a vast database of scholarly articles. Another popular tool is Google Scholar, which offers citation metrics and helps users find related research. These tools are essential for academics seeking to enhance their work's visibility and credibility.