Dyfyniad APA

Williams, C. (1989). Soviet public health: A case study of Leningrad, 1917-1932. University of Essex.

Dyfyniad Arddull Chicago

Williams, Christopher. Soviet Public Health: A Case Study of Leningrad, 1917-1932. England: University of Essex, 1989.

Dyfyniad MLA

Williams, Christopher. Soviet Public Health: A Case Study of Leningrad, 1917-1932. University of Essex, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.