https://www.ncbi.nlm.nih.gov/books/NBK559227/
https://repository.unair.ac.id/95465/1/Buku%20Panduan%20Penatalaksanaan%20Batu%20Saluran%20Kemih.pdf
https://eprints.umm.ac.id/47516/3/BAB%20II.pdf
https://eprints.umm.ac.id/47830/3/BAB%20II.pdf
https://eprints.umbjm.ac.id/721/5/BAB%202__.pdf