National Geographic Society (U.S.), Johnson, R. L., & Foster, S. (2010). National Geographic guide to medicinal herbs: The world's most effective healing plants. National Geographic.
Цитирование в стиле Чикаго (17-е изд.)National Geographic Society (U.S.), Rebecca L. Johnson, и Steven Foster. National Geographic Guide to Medicinal Herbs: The World's Most Effective Healing Plants. Washington, D.C.: National Geographic, 2010.
Цитирование MLA (8-е изд.)National Geographic Society (U.S.), et al. National Geographic Guide to Medicinal Herbs: The World's Most Effective Healing Plants. National Geographic, 2010.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.