APA (7th ed.) Citation

Pettorino, V., Amendola, L., & Wetterich, C. (2013). How early is early dark energy? Arxiv.

Chicago Style (17th ed.) Citation

Pettorino, Valeria, Luca Amendola, and Christof Wetterich. "How Early Is Early Dark Energy?" Arxiv 2013.

MLA (9th ed.) Citation

Pettorino, Valeria, et al. "How Early Is Early Dark Energy?" Arxiv, 2013.