Paper  bibtex   

@incollection{rusk_montessori_1918,
	address = {London},
	title = {Montessori [{Chapter} {XII}]},
	copyright = {Public Domain},
	url = {https://hdl.handle.net/2027/uc2.ark:/13960/t1fj2d16p?urlappend=%3Bseq=274},
	language = {en},
	booktitle = {The {Doctrines} of the {Great} {Educators}},
	publisher = {Macmillan and Co.},
	author = {Rusk, Robert R.},
	year = {1918},
	pages = {262--288}
}