Duggal, A. K., & Puri, P. V. (1991). Laboratory Manual in Highway Engineering. Wiley Eastern.
Chicago Stili AlıntıDuggal, Ajay K., ve P. Vijay Puri. Laboratory Manual in Highway Engineering. New Delhi: Wiley Eastern, 1991.
MLA AlıntıDuggal, Ajay K., ve P. Vijay Puri. Laboratory Manual in Highway Engineering. Wiley Eastern, 1991.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..