APA (7th ed.) Citation

(1979). U.S. book publishing yearbook and directory : 1979-80: 1979-80. Knowledge Industry Publications.

Chicago Style (17th ed.) Citation

U.S. Book Publishing Yearbook and Directory : 1979-80: 1979-80. Knowledge Industry Publications, 1979.

MLA (9th ed.) Citation

U.S. Book Publishing Yearbook and Directory : 1979-80: 1979-80. Knowledge Industry Publications, 1979.

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