Gaya APA

Sudjarno, ;, , M, I., Wiwoho, A. (2013). Effectiveness of Sodium Zeolite Filter Media for Treating Hard Water in Sampung Pond Ok Village, Sub District Sampung, District Ponorogo . Jakarta: Poltekes Jakarta II.

Gaya MLA

Sudjarno, ;, , Mochamad, Ichsan., Wiwoho, Abi. "Effectiveness of Sodium Zeolite Filter Media for Treating Hard Water in Sampung Pond Ok Village, Sub District Sampung, District Ponorogo". Jakarta: Poltekes Jakarta II, 2013. Text.