Write SQL query to solve given problem: Give the author's name of the books that cost 19 dollars and above.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT DISTINCT T3.author_name FROM book AS T1 INNER JOIN book_author AS T2 ON T1.book_id = T2.book_id INNER JOIN author AS T3 ON T3.author_id = T2.author_id INNER JOIN order_line AS T4 ON T4.book_id = T1.book_id WHERE T4.price > 19