APA (7th ed.) Citation

Lovecraft, H. P. (1971). At the mountains of madness and other tales of terror. Ballantine Books.

Chicago Style (17th ed.) Citation

Lovecraft, H. P. At the Mountains of Madness and Other Tales of Terror. New York: Ballantine Books, 1971.

MLA (9th ed.) Citation

Lovecraft, H. P. At the Mountains of Madness and Other Tales of Terror. Ballantine Books, 1971.