Van Inwagen 2023 Van Inwagen, Peter (2023). "Existence". Encyclopedia Britannica (engelsk). Arkiveret fra originalen 29. juni 2023. Hentet 7. august 2023.
cambridge.org
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CUP staff CUP staff. "existence". Cambridge Dictionary. Cambridge University Press. Arkiveret fra originalen 24. maj 2023. Hentet 10. august 2023.
Nelson 2022, lead section, §2. Meinongianism Nelson, Michael (2022). "Existence". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 3. september 2018. Hentet 6. august 2023.
Sorensen 2023, lead section Sorensen, Roy (2023). "Nothingness". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 30. august 2006. Hentet 17. august 2023.
Nelson 2022, lead section Nelson, Michael (2022). "Existence". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 3. september 2018. Hentet 6. august 2023.
Sorensen 2023, lead section, §1. Why is there something rather than nothing? Sorensen, Roy (2023). "Nothingness". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 30. august 2006. Hentet 17. august 2023.
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Van Inwagen 2023 Van Inwagen, Peter (2023). "Existence". Encyclopedia Britannica (engelsk). Arkiveret fra originalen 29. juni 2023. Hentet 7. august 2023.
Nelson 2022, lead section, §2. Meinongianism Nelson, Michael (2022). "Existence". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 3. september 2018. Hentet 6. august 2023.
Sorensen 2023, lead section Sorensen, Roy (2023). "Nothingness". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 30. august 2006. Hentet 17. august 2023.
Nelson 2022, lead section Nelson, Michael (2022). "Existence". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 3. september 2018. Hentet 6. august 2023.
Casati & Fujikawa, lead section, §4. Why Is There Something Rather than Nothing? Casati, Filippo; Fujikawa, Naoya. "Existence". Internet Encyclopedia of Philosophy. Arkiveret fra originalen 10. august 2023. Hentet 7. august 2023.
Sorensen 2023, lead section, §1. Why is there something rather than nothing? Sorensen, Roy (2023). "Nothingness". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Arkiveret fra originalen 30. august 2006. Hentet 17. august 2023.