Auditing P 7-29 The following are examples of documentation typically obtained by auditors:

1. Vendors invoices
2. General ledgers
3. Bank statements
4. Cancelled payroll checks
5. Payroll time cards
6. Purchase requisitions
7. Receiving reports (documents prepared when merchandise is received)
8. Minutes of board of directors
9. Remittance advices
10. Signed W-4s (Employee's 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. Title insurance policies for real estate
18. 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.