Gaya APA

Warning: Undefined variable $authors_string in /var/www/html/template/default-blue/citation/apa_style_template.php on line 21
Economics. (1955). Wonosobo: McGraw-Hill Book Company, Inc..

Gaya MLA

Warning: Undefined variable $authors_string in /var/www/html/template/default-blue/citation/mla_style_template.php on line 21
Economics. . Wonosobo: McGraw-Hill Book Company, Inc., 1955. Buku Teks.