CPA Journal. New York State Society of Certified Public Accountants.
Dyfyniad Arddull ChicagoCPA Journal. New York State Society of Certified Public Accountants.
Dyfyniad MLACPA Journal. New York State Society of Certified Public Accountants.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.