Answer:
Christian: The Christian Bible or The Book of Mormon
Muslim (Islam): The Qur'an or The Hadiths
Jewish: The Torah (sometimes also called 'The Hebrew Bible')
Hindu: The Vedas or The Upanishads
Buddhism: The Tipitaka
Shintoism: The Kojiki
Sikhism: The Guru Granth Sahib
Taoism: The Dao De Jing
Explanation:
There are holy books for every religion so it would be helpful if you could specify. I have the holy books for the major religions of the world, though please note that there may be misspellings or such as I am not familiar with each of these religions.