APA
WHO, . (1998). Guidelines for drinking - water quality : addendum to volume I recommendations. auth., Geneva: .
Chicago
WHO, . 1998. Guidelines for drinking - water quality : addendum to volume I recommendations. auth., Geneva: .
Harvard
WHO, . (1998). Guidelines for drinking - water quality : addendum to volume I recommendations. auth., Geneva: .
MLA
WHO, . Guidelines for drinking - water quality : addendum to volume I recommendations. auth., Geneva: . 1998.