Richards, B. J. (1988). Tactics to handle a tax audit: Taxation audits and penalties (3rd ed.). Centre for Professional Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Richards, Brian J. Tactics to Handle a Tax Audit: Taxation Audits and Penalties. 3rd ed. South Melbourne: Centre for Professional Development, 1988.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Richards, Brian J. Tactics to Handle a Tax Audit: Taxation Audits and Penalties. 3rd ed. Centre for Professional Development, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.