APA (7th ed.) Citation

Helmi, A. (2000). The formation of the Galactic halo.

Chicago Style (17th ed.) Citation

Helmi, Amina. The Formation of the Galactic Halo. 2000.

MLA (9th ed.) Citation

Helmi, Amina. The Formation of the Galactic Halo. 2000.

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