Three weeks. Please check the link below.
It is approximately 43,600 words in length.
It took Robert Swindells about six months to write "Room 13." He reportedly wrote the book in his attic study in Scarborough, England.
It had taken him atleast 5 years to write one book.
The answer to this question depends on the book.
The longest period it has taken to write a book was 10 years. War and peace.
The Book of Revelation in the Bible is thought to have been written around 96 A.D. There is no conclusive school of thought as to how long it took to actually write the book.
14 years
nelson Mandela write the book long walk to freedom because he wants to show people that you can fight in what you belive in
100 days
2 hours
1 year
exactly 12 years!