APA (7th ed.) Citation

Böhm-Mäder, J. Universe 2.0: Black holes? No. Black stars! Frontiers Media S.A.

Chicago Style (17th ed.) Citation

Böhm-Mäder, Johannes. Universe 2.0: Black Holes? No. Black Stars! Frontiers Media S.A.

MLA (9th ed.) Citation

Böhm-Mäder, Johannes. Universe 2.0: Black Holes? No. Black Stars! Frontiers Media S.A.

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