Cita APA

(2012). National Geographic Mei-Agustus 2012. Gramedia.

Chicago Style (17th ed.) Citation

National Geographic Mei-Agustus 2012. Gramedia, 2012.

Cita MLA

National Geographic Mei-Agustus 2012. Gramedia, 2012.

Atenció: Aquestes cites poden no estar 100% correctes.