Final answer:
When no reference is made in the auditor's report to other auditors who perform a portion of the audit, it generally means that the audit was conducted by a single auditor or firm without the involvement of others. Disclosing any significant involvement of other auditors is important for transparency and credibility.
Step-by-step explanation:
In the auditor's report, when there is no reference made to other auditors who perform a portion of the audit, it typically means that the audit was conducted entirely by one auditor or audit firm. This could be due to the fact that the audit work was not significant enough to require the involvement of additional auditors. It is important for auditors to disclose any significant involvement of other auditors in order to provide transparency and maintain the credibility of the audit report.