Gaya APA

C.L, S., S.Tunggul, . (2011). Model development of rainwater management for agriculture decision support system in semi arid area. . Surabaya: Petra Christian University Surabaya.

Gaya MLA

C.L, Susilawati., S.Tunggul, . "Model development of rainwater management for agriculture decision support system in semi arid area.". Surabaya: Petra Christian University Surabaya, 2011. Artikel.