Warning: session_start(): open(/var/cpanel/php/sessions/alt-php81/sess_929c2q8ljhs1g2vbffasii65jr, O_RDWR) failed: No such file or directory (2) in /home/ftunma/public_html/e-library/lib/Session/Factory.php on line 59

Warning: session_start(): Failed to read session data: files (path: /var/cpanel/php/sessions/alt-php81) in /home/ftunma/public_html/e-library/lib/Session/Factory.php on line 59

Gaya APA

C.Bingham, R. (1987). Economic Concepts A Programmed Approach . USA: USA.

Gaya MLA

C.Bingham, Robert. "Economic Concepts A Programmed Approach". USA: USA, 1987. Text.