APA-referens (7:e uppl.)

Katigbak, A. F. (2003). New LIFE sub-study shows: Losartan lowers risk of developing atrial fibrillation among hypertensives. Philippine Star.

Chicago-referens (17:e uppl.)

Katigbak, Antonio F. "New LIFE Sub-study Shows: Losartan Lowers Risk of Developing Atrial Fibrillation Among Hypertensives." Philippine Star 2003.

MLA-referens (9:e uppl.)

Katigbak, Antonio F. "New LIFE Sub-study Shows: Losartan Lowers Risk of Developing Atrial Fibrillation Among Hypertensives." Philippine Star, 2003.