Regalado, E. (2018). Davao City visitor arrivals breach 2M in 2017. IN Travel & Tourism [column]. Philippine Star.
Chicago-referens (17:e uppl.)Regalado, Edith. "Davao City Visitor Arrivals Breach 2M in 2017. IN Travel & Tourism [column]." Philippine Star 2018.
MLA-referens (9:e uppl.)Regalado, Edith. "Davao City Visitor Arrivals Breach 2M in 2017. IN Travel & Tourism [column]." Philippine Star, 2018.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.