APA-referens (7:e uppl.)

PORTAL R W. (1988). HEART ATTACK: PREVENTION AND TREATMENT. BRITISH MEDICAL ASSOCIATIONS JAICO PUBLISHING HOU.

Chicago-referens (17:e uppl.)

PORTAL R W. HEART ATTACK: PREVENTION AND TREATMENT. NEW DELHI: BRITISH MEDICAL ASSOCIATIONS JAICO PUBLISHING HOU, 1988.

MLA-referens (9:e uppl.)

PORTAL R W. HEART ATTACK: PREVENTION AND TREATMENT. BRITISH MEDICAL ASSOCIATIONS JAICO PUBLISHING HOU, 1988.