APA (7th ed.) Citation

Gratton, L. (1971). X-ray sources in the milky way.

Chicago Style (17th ed.) Citation

Gratton, Livio. X-ray Sources in the Milky Way. Frascati, 1971.

MLA (9th ed.) Citation

Gratton, Livio. X-ray Sources in the Milky Way. 1971.

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