APA (7th ed.) Citation

Ober Joyce A & U.S. Geological Survey. Materials flow of sulfur.

Chicago Style (17th ed.) Citation

Ober Joyce A and U.S. Geological Survey. Materials Flow of Sulfur.

MLA (9th ed.) Citation

Ober Joyce A and U.S. Geological Survey. Materials Flow of Sulfur.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.