(1975). Teachers study guide on the biology of human populations. Unesco.
Chicagoスタイル(17版)引用形式Teachers Study Guide on the Biology of Human Populations. Paris: Unesco, 1975.
MLA(9版)引用形式Teachers Study Guide on the Biology of Human Populations. Unesco, 1975.
警告: この引用は必ずしも正確ではありません.