Nguyen, Trung: History of Humans. (”The literary philosophy developed by the American writer H. P. Lovecraft, stating that there is no recognizable divine presence, such as god, in the Universe, and that humans are particularly insignificant in the larger scheme of intergalactic existence.”) Viitattu 13.1.2021. (englanniksi)
Grave of H. P. Lovecraft. Quahog: the definitive Rhode Island road trip. Viitattu 13.2.2021. (englanniksi)
sf-encyclopedia.com
Stableford, Brian M. & Clute, John: Lovecraft, H. P.The Encyclopedia of Science Fiction. Toimittaneet John Clute, David Langford, Peter Nicholls ja Graham Sleight. Gollancz, 19.12.2020. Viitattu 24.1.2021. (englanniksi)
Nicholls, Peter & Clute, John: Gothic SF. The Encyclopedia of Science Fiction, toimittaneet John Clute ym. London: Gollancz, päivitetty 29.9.2020. Viitattu 16.12.2020. (englanniksi)