@inbook{Ingersoll1896whyagnostic,
  author    = {Ingersoll, Robert G.},
  title     = {Why I Am an Agnostic},
  booktitle = {The Works of Robert G. Ingersoll, Dresden Edition},
  publisher = {C. P. Farrell},
  address   = {New York},
  volume    = {4},
  year      = {1896},
  url       = {https://thegreatagnostic.com/works/why-i-am-an-agnostic/},
  note      = {Public domain. Dresden Edition identifier: dresden:vol-4:why-i-am-an-agnostic}
}