Gaya APA

SULAKHUDIN, . et al (2011). Zeolite and Hacalcia as Coating Material for Improving Quality of NPK Fertilizer in Costal Sandy . Lampung: UNILA- Universitas Lampung.

Gaya MLA

SULAKHUDIN, . et al. "Zeolite and Hacalcia as Coating Material for Improving Quality of NPK Fertilizer in Costal Sandy ". Lampung: UNILA- Universitas Lampung, 2011. Artikel.