APA-viite (7. p.)
VALDERRAMA, E., & ET AL. (2003). CHRONIC DISEASE, FUNCTIONAL STATUS, AND SELF-ASCRIBED CAUSES OF DISABILITIES AMONG NONINSTITUTIONALIZED OLDER PEOPLE IN SPAIN.
Chicago-viite (17. p.)
VALDERRAMA, E., ja ET AL. CHRONIC DISEASE, FUNCTIONAL STATUS, AND SELF-ASCRIBED CAUSES OF DISABILITIES AMONG NONINSTITUTIONALIZED OLDER PEOPLE IN SPAIN. 2003.
MLA-viite (9. p.)
VALDERRAMA, E., ja ET AL. CHRONIC DISEASE, FUNCTIONAL STATUS, AND SELF-ASCRIBED CAUSES OF DISABILITIES AMONG NONINSTITUTIONALIZED OLDER PEOPLE IN SPAIN. 2003.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.