Gaya APA
Ades, J, L. (1981).
Increasing Your Sales Potential: A Practical Guide to Successful Selling .
United States of America:
Harper & Row.
Gaya MLA
Ades, J., Leslie.
"Increasing Your Sales Potential: A Practical Guide to Successful Selling".
United States of America:
Harper & Row,
1981.
Text.