Book store employee is required, because if we do, people will not appreciate because it is necessary to book store got organized, trader, people clean the shop.
Bookstores need to be employed, for if we do it alone, it will not be because the book needed someone to take care of books, sales people, cleaning the shop.
The bookstore to have employed because if we do this alone will not because the bookstore needs constant care of the books, the trader, the cleaner the shop.