APA (7th ed.) Citation

Racorean, O. The non-orientable spacetime of the eternal black hole. Elsevier.

Chicago Style (17th ed.) Citation

Racorean, Ovidiu. The Non-orientable Spacetime of the Eternal Black Hole. Elsevier.

MLA (9th ed.) Citation

Racorean, Ovidiu. The Non-orientable Spacetime of the Eternal Black Hole. Elsevier.

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