APA
Indian Standards Institution, . (1989). Key for identification of commercial timbers IS;4970-1973. New Delhi: Indian Standards Institution.
Chicago
Indian Standards Institution, . 1989. Key for identification of commercial timbers IS;4970-1973. New Delhi: Indian Standards Institution.
Harvard
Indian Standards Institution, . (1989). Key for identification of commercial timbers IS;4970-1973. New Delhi: Indian Standards Institution.
MLA
Indian Standards Institution, . Key for identification of commercial timbers IS;4970-1973. New Delhi: Indian Standards Institution. 1989.