How to use ORDER BY when using JOINS in SQL SERVER

Please refer this example of JOIN with ORDER BY

SELECT emloyees.FirstName , orders.OrderId
From Employees emloyees
	 INNER JOIN Orders orders  ON emloyees.EmployeeId = orders.EmployeeId
	 INNER JOIN Customers customers ON customers.CustomerId = orders.CustomerId 
WHERE  customers.City = 'Aachen'
ORDER BY FirstName ASC

FirstName OrderId

Janet         10391 Laura         11036 Margaret    10363 Nancy        10825 Nancy        11067 Robert       10797