(1980). 1981 US Master tax guide. Chicago, Illinois : Commerce Clearing House.
Chicago Style (17th ed.) Citation1981 US Master Tax Guide. Chicago, Illinois : Commerce Clearing House, 1980.
ציטוט MLA1981 US Master Tax Guide. Chicago, Illinois : Commerce Clearing House, 1980.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.