Aquino, R. C. (2009). Shouldn't we be saying thank you?. IN Pensees [column]. Manila Standard Today.
Chicago-referens (17:e uppl.)Aquino, Ranhilio Callangan. "Shouldn't We Be Saying Thank You?. IN Pensees [column]." Manila Standard Today 2009.
MLA-referens (9:e uppl.)Aquino, Ranhilio Callangan. "Shouldn't We Be Saying Thank You?. IN Pensees [column]." Manila Standard Today, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.