Write SQL query to solve given problem: List all the titles of the Spanish books published by Alfaguara.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.title FROM book_language AS T1 INNER JOIN book AS T2 ON T2.language_id = T1.language_id INNER JOIN publisher AS T3 ON T3.publisher_id = T2.publisher_id WHERE T1.language_name = 'Spanish' AND T3.publisher_name = 'Alfaguara' GROUP BY T2.title