APA
WHO. TRS no.669, . (1981). Evaluation of certain food additives. : .
Chicago
WHO. TRS no.669, . 1981. Evaluation of certain food additives. : .
Harvard
WHO. TRS no.669, . (1981). Evaluation of certain food additives. : .
MLA
WHO. TRS no.669, . Evaluation of certain food additives. : . 1981.