Doctrine2 + Symfony2: Bringing more than one entity in queryBuilder

Hello.

I have the following question.

I'm doing a select in several different tables, I want to bring some of them. But all the way I try, or it only returns the main or an error.

Can you help me?

 $em = $this->getDoctrine()->getManager();
    $qb = $em->createQueryBuilder()
        ->select( ['c as customer','b as bankAccount']  )
        ->from('MyBundle:BankAccount', 'b')
        ->join('b.customer', 'c')
        ->join('c.prepaidCards', 'p')
        ->leftJoin('c.addresses', 'a', Join::WITH, 'a.type = :address_type')
        ->leftJoin('a.city', 'ci')
        ->leftJoin('a.state', 's')
        ->leftJoin('c.company', 'co')
        ->where('b.accountType = :account_type')
        ->andWhere('b.isActive = 1')
        ->andWhere('p.status = :card_status')
        ->andWhere('p.shippingType ' . (is_null($shippingType) ? 'IS NULL' : '= :shipping_type'))
        ->andWhere('c.status IN (:customer_status)')
        ->setParameter('account_type', BankAccount::ACCOUNT_TYPE_CARD)
        ->setParameter('card_status', PrepaidCard::CARD_STATUS_ASSIGNED)
        ->setParameter('address_type', Address::TYPE_SHIPPING);
    if (!is_null($shippingType)) {
        $qb->setParameter('shipping_type', $shippingType);
    }
    $result = $qb->setParameter('customer_status', [Customer::STATUS_ACCEPTED, Customer::STATUS_ACTIVATED])
        ->getQuery()->getResult();

I've tried the excerpt:

->select( ['c as customer','b as bankAccount']  )

How to:

->select( 'c as customer, b as bankAccount'  )

->select( ['c','b']  )

->select( 'c','b'  )

And some others that I do not remember at the moment.

I need to bring 'c', 'b', 'p', 'a', 'ci', 's'