Natarajan, Priyamvada. “The First Monster Black Holes”. Scientific American, vol. 318, no. 2, 2018, pp. 24-29, https://doi.org/10.1038/scientificamerican0218-24.
Natarajan, P. (2018). The First Monster Black Holes. Scientific American, 318(2), 24-29. https://doi.org/10.1038/scientificamerican0218-24
Natarajan P. The First Monster Black Holes. Scientific American. 2018;318(2):24-9.