Gaya APA

Warning: Undefined variable $authors_string in /home/smanda/pustaka/template/akasia/citation/apa_style_template.php on line 21 Masa Depan Bumi. (1993). Jakarta: Yayasan Obor Indonesia.

Gaya MLA

Warning: Undefined variable $authors_string in /home/smanda/pustaka/template/akasia/citation/mla_style_template.php on line 21 Masa Depan Bumi. . Jakarta: Yayasan Obor Indonesia, 1993. Text.