@book{1990,
	author = {C.S. Lewis},
	title = {The Problem of Pain},
	publisher = {Harper Collins e-books},
	url = {https://library.trinitytheologicalcollege.org/cgi-bin/koha/opac-pdf-viewer.pl?file=E%20Books/E%20books%20Theology/The%20Problem%20of%20Pain%20%5BC.S.%20LEWIS%5D.pdf}
}