APA Format
Ribes, Bruno; Indonesia. Direktorat Jenderal Perkebunan. (1978).
Biology and ethics / by Bruno Ribes
. Paris :: Unesco,.
MLA Format
Ribes, Bruno; Indonesia. Direktorat Jenderal Perkebunan.
Biology and ethics / by Bruno Ribes
. Paris :: Unesco,, 1978
Chicago Format
Ribes, Bruno; Indonesia. Direktorat Jenderal Perkebunan. Biology and ethics / by Bruno Ribes. Paris :: Unesco,, 1978.