Keterasingan Manusia, Dialektika Georg Simmel

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Weingartner, Rudolph H. 1962 Experience and Culture: The Philosophy of Georg Simmel. Middletown, Conn.: Wesleyan Univ. Press.

Wolff, Kurt H. (editor) 1959 Georg Simmel, 1858-1918: A Collection of Essays, With Translations and a BIBLIOGRAPHY. Columbus: Ohio State Univ. Press.