DOULOS PHOS TO BECOME HOTEL (p.5)(PDF). The Porthole (New York, NY: World Ship Society, Port of New York). November 2015 [11 January 2016]. (原始内容存档(PDF)于2021-02-01).
DOULOS PHOS TO BECOME HOTEL (p.5)(PDF). The Porthole (New York, NY: World Ship Society, Port of New York). November 2015 [11 January 2016]. (原始内容存档(PDF)于2021-02-01).