APA (7th ed.) Citation

Sies, H., & Brune, B. Oxygen biology and hypoxia.

Chicago Style (17th ed.) Citation

Sies, Helmut, and Bernhard Brune. Oxygen Biology and Hypoxia.

MLA (9th ed.) Citation

Sies, Helmut, and Bernhard Brune. Oxygen Biology and Hypoxia.

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