APA (7th ed.) Citation

(2018). National geographic almanac 2019: Hot new science, incredible photographs, maps, facts, infographics & more (U.S. edition.). National Geographic.

Chicago Style (17th ed.) Citation

National Geographic Almanac 2019: Hot New Science, Incredible Photographs, Maps, Facts, Infographics & More. U.S. edition. Washington, D.C.: National Geographic, 2018.

MLA (8th ed.) Citation

National Geographic Almanac 2019: Hot New Science, Incredible Photographs, Maps, Facts, Infographics & More. U.S. edition. National Geographic, 2018.

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