On defining the phoneme,
by W. Freeman Twaddell ...

APA Citation

Twaddell, W. F. (William Freeman). (1935). On defining the phoneme. Baltimore: Waverly press, inc.

MLA Citation

Twaddell, W. F. (William Freeman). On Defining the Phoneme. Baltimore: Waverly press, inc, 1935.

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