Paper  bibtex   

@article{chamberlain_editorial_1913,
	title = {Editorial; {The} {Montessori} {Method}},
	volume = {9},
	copyright = {Public Domain},
	url = {https://hdl.handle.net/2027/uc1.a0013839915?urlappend=%3Bseq=126},
	language = {en},
	number = {2},
	journal = {Sierra Educational News},
	author = {Chamberlain, Arthur Henry},
	month = feb,
	year = {1913},
	pages = {110}
}