Varona, B. P. (2010). Learning from disasters creates a culture if safety. U.P. News.
Cita Chicago (17th ed.)Varona, Bernice P. "Learning from Disasters Creates a Culture If Safety." U.P. News 2010.
Cita MLA (9th ed.)Varona, Bernice P. "Learning from Disasters Creates a Culture If Safety." U.P. News, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.