(1975). Teacher,s study guide on the biology of human population Asia. Unesco.
Cita Chicago (17th ed.)Teacher,s Study Guide on the Biology of Human Population Asia. Paris: Unesco, 1975.
Cita MLA (9th ed.)Teacher,s Study Guide on the Biology of Human Population Asia. Unesco, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.