APA
Indian Road Congress, . (1980). Highway Research Bullettin No.13 : Rigid and Flexible Pavements. New Delhi: INDIAN ROAD CONGRESS.
Chicago
Indian Road Congress, . 1980. Highway Research Bullettin No.13 : Rigid and Flexible Pavements. New Delhi: INDIAN ROAD CONGRESS.
Harvard
Indian Road Congress, . (1980). Highway Research Bullettin No.13 : Rigid and Flexible Pavements. New Delhi: INDIAN ROAD CONGRESS.
MLA
Indian Road Congress, . Highway Research Bullettin No.13 : Rigid and Flexible Pavements. New Delhi: INDIAN ROAD CONGRESS. 1980.