Аденски залив — разлика између измена

* {{cite magazine |url= https://www.thenation.com/article/cost-doing-business-open-sea/ |title= The Cost of Doing Business on the Open Sea |first= Richard |last= Pollak |magazine= [[The Nation]] |date= April 22, 2009 |access-date= 18. 08. 2021 |archive-date= 19. 09. 2015 |archive-url= https://web.archive.org/web/20150919104111/http://www.thenation.com/article/cost-doing-business-open-sea/ |url-status= dead }}