APA
Narayanan P,, . (1985). Patent law. Calcutta: Eastern Law House.
Chicago
Narayanan P,, . 1985. Patent law. Calcutta: Eastern Law House.
Harvard
Narayanan P,, . (1985). Patent law. Calcutta: Eastern Law House.
MLA
Narayanan P,, . Patent law. Calcutta: Eastern Law House. 1985.