APA (7th ed.) Citation

Berann, H. C., Boberschmidt, L. J. H., & Tharp, M. (1971). Arctic Ocean floor / produced in the Geographic Art Division, National Geographic Society. Washington, D.C. : National Geographic Society.

Chicago Style (17th ed.) Citation

Berann, Heinrich C., Leo J.; Heezen Boberschmidt, and Marie Tharp. Arctic Ocean Floor / Produced in the Geographic Art Division, National Geographic Society. Washington, D.C. : National Geographic Society, 1971.

MLA (9th ed.) Citation

Berann, Heinrich C., et al. Arctic Ocean Floor / Produced in the Geographic Art Division, National Geographic Society. Washington, D.C. : National Geographic Society, 1971.