Spring JavaConfig how do I refer to beans that I have defined to create new beans

Here's an excerpt from my Applications beans definition, I want to be able to refer to beans that I have defined.

@Configuration
@ComponentScan({"com.abc.config", "com.abc.config.common"})
public class ApplicationConfig {
    @Bean(name = "AWSCredentialsProvider")
    AWSCredentials credentialsProvider() { return new AWSCredentials(/*Omitted*/); }  
    @Bean(name = "DynamoDBClient")
    AmazonDynamoDBClient dynamoDBClient() {
        AmazonDynamoDBClient dynamoDB = new AmazonDynamoDBClient(credentialsProvider());
        return dynamoDB;        
    }  
    @Bean S3Repository s3Repository() {
        AmazonS3 s3 = new AmazonS3Client(credentialsProvider());
        return new S3Repository(s3);
    }  
    @Bean LevelMapper levelMapper() { return new LevelMapper(s3Repository()); }
    @Bean ImageDownloader imageDownloader() { return new ImageDownloader(s3Repository()); }
}

Right now what I'm doing is calling methods like s3Repository() in two places; this way I'll be creating two instances of the repository whereas I would like there to be only one instance across the application. Something like credentialsProvider() is lightweight so I don't mind a new instance being created for every bean.