Knego, Peter (December 21, 2015). "CRYSTAL ESPRIT Christened". Maritime Matters. Archived from the original on December 31, 2015. Retrieved January 7, 2016.
Knego, Peter (December 21, 2015). "CRYSTAL ESPRIT Christened". Maritime Matters. Archived from the original on December 31, 2015. Retrieved January 7, 2016.