Gaya APA

IAGI, . (2012). Proceedins 41IAGI Annual Convetion & Exhibition: yogyakarta 17 - 20 September 2012 "geology living with harmony" . Yogyakarta: IKATAN AHL GEOLOGI INDONESIA.

Gaya MLA

IAGI, . "Proceedins 41IAGI Annual Convetion & Exhibition: yogyakarta 17 - 20 September 2012 "geology living with harmony"". Yogyakarta: IKATAN AHL GEOLOGI INDONESIA, 2012. Text.