APA
International Maritime Organization, . (1989). National seminar on MARPOL 73/78, Madras, India 20-24 November, 1989. London: International Maritime Organization.
Chicago
International Maritime Organization, . 1989. National seminar on MARPOL 73/78, Madras, India 20-24 November, 1989. London: International Maritime Organization.
Harvard
International Maritime Organization, . (1989). National seminar on MARPOL 73/78, Madras, India 20-24 November, 1989. London: International Maritime Organization.
MLA
International Maritime Organization, . National seminar on MARPOL 73/78, Madras, India 20-24 November, 1989. London: International Maritime Organization. 1989.