Karlin, Daniel. "Dark Tower, Siren Isle, Ruined Chapel: Landscapes of Love and Hate." Browning's Hatreds. : Oxford University Press, 1993-07-15. Oxford Scholarship Online. 2011-10-03. Date Accessed 20 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198112297.001.0001/acprof-9780198112297-chapter-11>.
Karlin, D.(1993-07-15). Dark Tower, Siren Isle, Ruined Chapel: Landscapes of Love and Hate. In Browning's Hatreds. : Oxford University Press. Retrieved 20 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198112297.001.0001/acprof-9780198112297-chapter-11.
Karlin, Daniel. "Dark Tower, Siren Isle, Ruined Chapel: Landscapes of Love and Hate." In Browning's Hatreds. : Oxford University Press, 1993-07-15. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198112297.001.0001/acprof-9780198112297-chapter-11.
Karlin D. Dark Tower, Siren Isle, Ruined Chapel: Landscapes of Love and Hate. In: Karlin D. Browning's Hatreds. Oxford University Press; 1993. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198112297.001.0001/acprof-9780198112297-chapter-11. Accessed May 20, 2013.