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:
Format this text according to APA style.

### Input:
Computer science is the study of how computers work and how they can be used to solve problems.

### Response:
Computer science is the study of how computers work and how they can be used to solve problems (Keller, 2013).