American Psychological Association
Duffey, William ( 1947 ). Voice and Delivery Training of Mind Voice and Body ( 00 ed. ). B Herder Book Co.
Modern Language Association
Duffey, William. Voice and Delivery Training of Mind Voice and Body . B Herder Book Co. 1947
Chicago Citation
Duffey, William. Voice and Delivery Training of Mind Voice and Body . 00 .St Louis
: B Herder Book Co, 1947.
American Medical Association
Duffey, William. Voice and Delivery Training of Mind Voice and Body . B Herder Book Co; 1947.