Gaya APA

al, E., Sutomo, S. (1991). Feasibility study on water iodization in several villages of iodine deficient areas in Indonesia . Jakarta: Puslitbang Ekologi Kesehatan, Badan Litbangkes.

Gaya MLA

al, Et., Sutomo, Sumengen. "Feasibility study on water iodization in several villages of iodine deficient areas in Indonesia". Jakarta: Puslitbang Ekologi Kesehatan, Badan Litbangkes, 1991. print.