Unesco. (1975). Teacher's study guide on the biology of human populations. Unesco Press.
Citación estilo ChicagoUnesco. Teacher's Study Guide on the Biology of Human Populations. Paris: Unesco Press, 1975.
Cita MLAUnesco. Teacher's Study Guide on the Biology of Human Populations. Unesco Press, 1975.
Warning: These citations may not always be 100% accurate.