Once you writing an assignment you may citing a journal, book, magazine, website, blog, newspaper, etc. How to cite all of them correctly? Now our library; Perpustakaan Al-Bukhari helps us to do citation in a correct way and easy too!.
Try to practice it here, you need to study it first before you able to master it.
http://www.liu.edu/cwis/CWP/library/workshop/citapa.htm