APA (7th ed.) Citation

Kuhn, H., & Brodrick, A. H. (1956). The rock pictures of Europe. Essential Books.

Chicago Style (17th ed.) Citation

Kuhn, Herbert, and Alan Houghton Brodrick. The Rock Pictures of Europe. Fair Lawn, New Jersey: Essential Books, 1956.

MLA (9th ed.) Citation

Kuhn, Herbert, and Alan Houghton Brodrick. The Rock Pictures of Europe. Essential Books, 1956.