Fortifications on the Caribbean Side of Panama: Portobelo-San Lorenzo (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Fortifications on the Caribbean Side of Panama: Portobelo-San Lorenzo" in English language version.

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Woods 2009, p. 45. Woods, Sarah (15 August 2009). Panama. Bradt Travel Guides. ISBN 978-1-84162-260-6.
Katzman 2005, p. 136. Katzman, Patricia (1 November 2005). Panama. Hunter Publishing, Inc. ISBN 978-1-58843-529-3.
Showker & Brennan 2008, p. 397. Showker, Kay; Brennan, Mary (1 May 2008). Caribbean Ports of Call: Eastern and Southern Regions: A Guide for Today's Cruise Passengers. Globe Pequot Press. ISBN 978-0-7627-4538-8.^{[permanent dead link‍]}
Whitney 1982, p. 96. Whitney, Tisha (1982). Cruising World. ISSN 0098-3519.
Katzman 2005, p. 137. Katzman, Patricia (1 November 2005). Panama. Hunter Publishing, Inc. ISBN 978-1-58843-529-3.

"Panamanian Fortifications Added to UNESCO List of World Heritage in Danger". Global Heritage Fund Organization. 27 June 2012. Archived from the original on 8 April 2015. Retrieved 22 May 2015.

"Panamanian Fortifications Added to UNESCO List of World Heritage in Danger". Global Heritage Fund Organization. 27 June 2012. Archived from the original on 8 April 2015. Retrieved 22 May 2015.

"Portobelo-San Lorenzo". World Heritage Site Organization. Retrieved 21 May 2015.