The following are examples of documentation typi¬ cally obtained by auditors:

1. Vendors' invoices 2. General ledgers 3. Bank statements 4. Cancelled payroll cheques 5. Payroll time cards 6. Purchase requisitions 7. Receiving reports (documents prepared when merchan¬ dise is received)

8. Minutes of the board of directors 9. Remittance advices 10. Signed TD-ls (Employees' Income Tax Withholding Exemption Certificates)

11. Signed lease agreements 12. Duplicate copies of bills of lading 13. Subsidiary accounts receivable records 14. Cancelled notes payable 15. Duplicate sales invoices 16. Articles of incorporation 17. Notes receivable Required

a. Classify each of the preceding items according to type of documentation: (1) internal or (2) external.

b. Explain why external evidence is more reliable than internal evidence.