Treaty Series No. 13 (1982). Amendments to the regulations under the Patent Co-operation Treaty done at Washington 19 June 1970 adopted by the Assembly of the International Patent Co-operation Union on 3 July 1981.
MLA
Great Britain. Treaty Series No. 13 (1982). Amendments to the regulations under the Patent Co-operation Treaty done at Washington 19 June 1970 adopted by the Assembly of the International Patent Co-operation Union on 3 July 1981. Cambridge [eng.] : Proquest LLC, 2007.
APA
Great Britain. (1982). Treaty Series No. 13 (1982). Amendments to the regulations under the Patent Co-operation Treaty done at Washington 19 June 1970 adopted by the Assembly of the International Patent Co-operation Union on 3 July 1981. Cambridge [eng.] : Proquest LLC.
Chicago
Great Britain. Treaty Series No. 13 (1982). Amendments to the regulations under the Patent Co-operation Treaty done at Washington 19 June 1970 adopted by the Assembly of the International Patent Co-operation Union on 3 July 1981. Cambridge [eng.] : Proquest LLC, 2007.