Gaya APA

(IAGI), I, A, G. (2012). Program Book 41IAGI Annual Convetion & Axhibitio. Yogyakarta 17-20 September 2012 "Geology Living with Harmony" . Yogyakarta: IAGI.

Gaya MLA

(IAGI), IKATAN, AHLI, GEOLOGI. "Program Book 41IAGI Annual Convetion & Axhibitio. Yogyakarta 17-20 September 2012 "Geology Living with Harmony"". Yogyakarta: IAGI, 2012. Text.