APA (7th ed.) Citation

Frontera, F., Dal Fiume, D., Dusi, W., Morelli, E., Spada, G., & Ventura, G. Hard X-ray observation of galactic X-ray sources. Elsevier.

Chicago Style (17th ed.) Citation

Frontera, F., D. Dal Fiume, W. Dusi, E. Morelli, G. Spada, and G. Ventura. Hard X-ray Observation of Galactic X-ray Sources. Amsterdam: Elsevier.

MLA (9th ed.) Citation

Frontera, F., et al. Hard X-ray Observation of Galactic X-ray Sources. Elsevier.