Currently, the option to print expense voucher that shows credit and debit is unavailable in QuickBooks. However, you'll want to pull up the general ledger report to see them. Let me guide you with the step-by-step instructions.
Go to Reports, then type "General Ledger" in the Find report by the name field.
Hover towards the Gear icon beside the Export icon.
Click on the Show More link.
Mark boxes next to Debit and Credit. Then, click anywhere to refresh the report.