Singh, Y. (1981). Population trends and population education (1st.). Sheth.
Citación estilo ChicagoSingh, Y. Population Trends and Population Education. 1st. Bombay: Sheth, 1981.
Cita MLASingh, Y. Population Trends and Population Education. 1st. Sheth, 1981.
Warning: These citations may not always be 100% accurate.