APA
,, . (1989). Trade marks : 30th annual report of the controller general of patents 1988-89. New Delhi: .
Chicago
,, . 1989. Trade marks : 30th annual report of the controller general of patents 1988-89. New Delhi: .
Harvard
,, . (1989). Trade marks : 30th annual report of the controller general of patents 1988-89. New Delhi: .
MLA
,, . Trade marks : 30th annual report of the controller general of patents 1988-89. New Delhi: . 1989.