Gaya APA

, D, S. et al (2011). Nutrient Cycling Index in Relation to Organic Matte and Soil Repiration of Rehabilitated Mine Sites . Lampung: UNILA- Universitas Lampung.

Gaya MLA

, DWI, Setyawan. et al. "Nutrient Cycling Index in Relation to Organic Matte and Soil Repiration of Rehabilitated Mine Sites ". Lampung: UNILA- Universitas Lampung, 2011. Artikel.