diff --git a/web_programming/crawl_google_scholar_citation.py b/web_programming/crawl_google_scholar_citation.py
index 5f2ccad5f..12072d0dd 100644
--- a/web_programming/crawl_google_scholar_citation.py
+++ b/web_programming/crawl_google_scholar_citation.py
@@ -9,17 +9,32 @@ from bs4 import BeautifulSoup
 
 def get_citation(base_url: str, params: dict) -> str:
     """
-    Return the citation number.
+    Returns the citation number for a publication based on its title, journal, volume,
+    pages, and year of publication.
+
+    Parameters:
+    - base_url: The base URL for making requests to Google Scholar.
+    - params: A dictionary containing the publication information.
+
+    Returns:
+    - A string containing the number of citations.
     """
+    # Send a GET request to the URL with the specified parameters
     soup = BeautifulSoup(
         requests.get(base_url, params=params, timeout=10).content, "html.parser"
     )
+
+    # Find the div element with class 'gs_ri' that contains citation information
     div = soup.find("div", attrs={"class": "gs_ri"})
+
+    # Find all links in the div and retrieve the third link (the citation count)
     anchors = div.find("div", attrs={"class": "gs_fl"}).find_all("a")
-    return anchors[2].get_text()
+
+    return anchors[2].get_text()  # Return the text from the third link
 
 
 if __name__ == "__main__":
+    # Define parameters for the publication whose citation is to be searched
     params = {
         "title": (
             "Precisely geometry controlled microsupercapacitors for ultrahigh areal "
@@ -29,6 +44,8 @@ if __name__ == "__main__":
         "volume": 30,
         "pages": "3979-3990",
         "year": 2018,
-        "hl": "en",
+        "hl": "en",  # Language to be used (English)
     }
+
+    # Call the get_citation function with the specified URL and parameters
     print(get_citation("https://scholar.google.com/scholar_lookup", params=params))