Dyfyniad APA

Wallin, J. E. W. (1925). Studies of mental defects and handicaps.

Dyfyniad Arddull Chicago

Wallin, J. E. Wallace. Studies of Mental Defects and Handicaps. [Oxford, O, 1925.

Dyfyniad MLA

Wallin, J. E. Wallace. Studies of Mental Defects and Handicaps. 1925.

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