AICPA Professional Standards, Volume 1, as of June 1, 2015, American Institute of Certified Public Accountants, New York, New York 10036-8775, http://www.aicpa.org

AICPA Professional Standards, Volume 2, as of June 1, 2015, American Institute of Certified Public Accountants, New York, New York 10036-8775, http://www.aicpa.org