World Health Organization. (2009). Systems thinking for health systems strengthening. World Health Organization.
Chicago Style aipamenaWorld Health Organization. Systems Thinking for Health Systems Strengthening. Geneva: World Health Organization, 2009.
MLA aipamenaWorld Health Organization. Systems Thinking for Health Systems Strengthening. World Health Organization, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.