@misc{Haret_Spiru_C._(1851–1912)_Mécanique_1910,
 author={Haret, Spiru C. (1851–1912)},
 copyright={Public Domain},
 address={Paris},
 address={Bucarest},
 howpublished={online},
 year={1910},
 publisher={Gauthier-Villars},
 publisher={Ch. Göbl},
 language={fre},
 type={Text},
 title={Mécanique sociale},
 URL={http://www.rcin.org.pl/Content/66534/PDF/WA35_11141_4661_Mecanique.pdf},
}