198
The Vineland Training School 1911, p. 311.
199
The Vineland Training School 1909, p. 41.
200
См.: Goddard 1910a.
201
Цит. по: Zenderland 1998, p. 154.
202
Porter 2018.
203
Witkowski 2015.
204
Davenport 1899, p. 39.
205
De Vries 1904, p. 41.
206
Davenport 1908.
207
Цит. по: Porter 2018.