Cobb, F. A., Mitchell, J., & Smith, C. (1946). Distribution: The case for a national census. Fabian Society.
Dyfyniad Arddull ChicagoCobb, F. A., Joan Mitchell, and Charles Smith. Distribution: The Case for a National Census. [London: Fabian Society, 1946.
Dyfyniad MLACobb, F. A., et al. Distribution: The Case for a National Census. Fabian Society, 1946.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.