Gaya APA

Warning: Undefined variable $authors_string in /var/www/html/template/default-blue/citation/apa_style_template.php on line 21
Effective Salesmanship. (1980). Amerika: Dryden Press.

Gaya MLA

Warning: Undefined variable $authors_string in /var/www/html/template/default-blue/citation/mla_style_template.php on line 21
Effective Salesmanship. - . Amerika: Dryden Press, 1980. Buku Teks.