Unesco. (1975). Teacher's study guide on the biology of human populations. Unesco Press.
Chicago Style aipamenaUnesco. Teacher's Study Guide on the Biology of Human Populations. Paris: Unesco Press, 1975.
MLA aipamenaUnesco. Teacher's Study Guide on the Biology of Human Populations. Unesco Press, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.