Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Put that list of books in alphabetical order by author.

### Input:
The Catcher in the Rye, Harry Potter and the Prisoner of Azkaban, 1984, The Great Gatsby

### Response:
1984, The Catcher in the Rye, The Great Gatsby, Harry Potter and the Prisoner of Azkaban