Singh, Y. (1981). Population trends and population education (1st.). Sheth.
Chicagoスタイル(17版)引用形式Singh, Y. Population Trends and Population Education. 1st. Bombay: Sheth, 1981.
MLA(9版)引用形式Singh, Y. Population Trends and Population Education. 1st. Sheth, 1981.
警告: この引用は必ずしも正確ではありません.