Gaya APA
Zelko, Harold P.. (1952).
How To Become A Successful Speaker .
London:
National Foremen's Institute, Inc..
Gaya Chicago
Zelko, Harold P..
How To Become A Successful Speaker.
London:
National Foremen's Institute, Inc.,
1952.
Text.
Gaya MLA
Zelko, Harold P..
How To Become A Successful Speaker.
London:
National Foremen's Institute, Inc.,
1952.
Text.
Gaya Turabian
Zelko, Harold P..
How To Become A Successful Speaker.
London:
National Foremen's Institute, Inc.,
1952.
Print.