Coakley, F.: Calf of Man Lights. A Manx Notebook: An electronic compendium of matters past and present connected with the Isle of Man, 2001. [dostęp 2008-09-27]. [zarchiwizowane z tego adresu (2006-10-16)].
Coakley, F.: Chicken Rock Light. A Manx Notebook: An electronic compendium of matters past and present connected with the Isle of Man, 2001. [dostęp 2008-09-27]. [zarchiwizowane z tego adresu (2007-10-10)].
web.archive.org
Coakley, F.: Calf of Man Lights. A Manx Notebook: An electronic compendium of matters past and present connected with the Isle of Man, 2001. [dostęp 2008-09-27]. [zarchiwizowane z tego adresu (2006-10-16)].
Coakley, F.: Chicken Rock Light. A Manx Notebook: An electronic compendium of matters past and present connected with the Isle of Man, 2001. [dostęp 2008-09-27]. [zarchiwizowane z tego adresu (2007-10-10)].
