@book{73619,
	author = { Spencer, Herbert,  and   Ribot, Th,},
	title = { Principes de psychologie / },
	publisher = { Librairie Félix Alcan,},
	year = {1912.},
	address = { Paris : },
	edition = {Nouvelle Edition.},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B10-12000.pdf}
}