APA (7th ed.) Citation

Wetterich, C. (2014). Eternal Universe. Physical review. D, Particles, fields, gravitation, and cosmology, 90(4), . https://doi.org/10.1103/PhysRevD.90.043520

Chicago Style (17th ed.) Citation

Wetterich, Christof. "Eternal Universe." Physical Review. D, Particles, Fields, Gravitation, and Cosmology 90, no. 4 (2014). https://doi.org/10.1103/PhysRevD.90.043520.

MLA (9th ed.) Citation

Wetterich, Christof. "Eternal Universe." Physical Review. D, Particles, Fields, Gravitation, and Cosmology, vol. 90, no. 4, 2014, https://doi.org/10.1103/PhysRevD.90.043520.