APA (7th ed.) Citation

Koch, H. W. (1971). A handbook of tests for school, college and industry. Ken-Books.

Chicago Style (17th ed.) Citation

Koch, Harry Walter. A Handbook of Tests for School, College and Industry. [San Francisco, Calif.]: Ken-Books, 1971.

MLA (9th ed.) Citation

Koch, Harry Walter. A Handbook of Tests for School, College and Industry. Ken-Books, 1971.