(2013). Prosiding Seminar nasional SCAN#: 2014 " Leave Nothing... Except Your Footprints and Love". UAJY.
Style de citation Chicago (17e éd.)Prosiding Seminar Nasional SCAN#: 2014 " Leave Nothing... Except Your Footprints and Love". UAJY, 2013.
Style de citation MLA (8e éd.)Prosiding Seminar Nasional SCAN#: 2014 " Leave Nothing... Except Your Footprints and Love". UAJY, 2013.
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