APA Format
International Labour Office; World Health Organization; United Nations Environment Programme. (1991).
Trichlorfon health and safety guide
. Geneva :: World Health Organization ,.
MLA Format
International Labour Office; World Health Organization; United Nations Environment Programme.
Trichlorfon health and safety guide
. Geneva :: World Health Organization ,, 1991
Chicago Format
International Labour Office; World Health Organization; United Nations Environment Programme. Trichlorfon health and safety guide. Geneva :: World Health Organization ,, 1991.