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Correction of defective speech:

APA Citation

Twitmyer, E. Burket., Nathanson, Y. Samuel. (1932). Correction of defective speech. Philadelphia: P. Blakiston's son & co., inc.

Twitmyer, Edwin Burket, 1873-, and Yale Samuel Nathanson. Correction of Defective Speech. Philadelphia: P. Blakiston's son & co., inc, 1932.

Warning: These citations may not always be complete (especially for serials).