APA (7th ed.) Citation

Commerce Clearing House & United States. Internal Revenue Service. (1990). IRS examination questions and official answers. Commerce Clearing House.

Chicago Style (17th ed.) Citation

Commerce Clearing House and United States. Internal Revenue Service. IRS Examination Questions and Official Answers. Chicago, Ill.: Commerce Clearing House, 1990.

MLA (9th ed.) Citation

Commerce Clearing House and United States. Internal Revenue Service. IRS Examination Questions and Official Answers. Commerce Clearing House, 1990.

Warning: These citations may not always be 100% accurate.