Pitirim Alexandrovich Sorokin – This site, developed and maintained by Roger W. Smith, is devoted to the Russian-American sociologist and social philosopher Pitirim A. Sorokin (1889-1968).

该网站由Roger W.开发和维护。史密斯，致力于俄罗斯裔美国社会学家和社会哲学家皮蒂勒姆·A。索罗金（1889-1968）。