مراجع

https://www.noor-book.com/%D9%83%D8%AA%D8%A7%D8%A8-%D8%A7%D9%84%D8%A5%D9%86%D8%B3%D8%A7%D9%86-%D8%A8%D9%8A%D9%86-%D8%A7%D9%84%D8%AC%D9%88%D9%87%D8%B1-%D9%88%D8%A7%D9%84%D9%85%D8%B8%D9%87%D8%B1-pdf