Natividad, D. (2000). Exercise regularly for better health, aging persons urged. Manila Times.
Chicago-referens (17:e uppl.)Natividad, Don. "Exercise Regularly for Better Health, Aging Persons Urged." Manila Times 2000.
MLA-referens (9:e uppl.)Natividad, Don. "Exercise Regularly for Better Health, Aging Persons Urged." Manila Times, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.