de Waal, Thomas (2015). Great Catastrophe: Armenians and Turks in the Shadow of Genocide. Oxford University Press. s. 7. ISBN9780199350698. «The island of Aghtamar on the inland sea of Lake Van is home to one of the most famous of all Armenian churches, a tenth-century cathedral...»
Adalian, Rouben Paul (2010). Historical Dictionary of Armenia. Lanham, Maryland: Scarecrow Press. s. 74. ISBN978-0-8108-7450-3. «AGHTAMAR. Island in Lake Van and location of one of the most important architectural monuments of medieval Armenia.»
Knight, Charles, red. (1866). «Lake Van». Geography: Or, First Division of "The English Encyclopædia". London: Bradbury, Evans & Co. s. 519. «There are some small islands in the lake, the principal of which is Akhtamar...»
