Sankaran, B. (2000). Osteoporosis. World Health Organization.
Chicago Style aipamenaSankaran, Balu. Osteoporosis. New Delhi: World Health Organization, 2000.
MLA aipamenaSankaran, Balu. Osteoporosis. World Health Organization, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.