APA (7th ed.) Zitazioa
Duggal, A. K., & Puri, V. P. (2017). Laboratory manual in highway engineering (2nd ed.). New Age International.
Chicago Style (17th ed.) Zitazioa
Duggal, Ajay K., eta Vijay P. Puri. Laboratory Manual in Highway Engineering. 2nd ed. Kolkata: New Age International, 2017.
MLA (9th ed.) Zitazioa
Duggal, Ajay K., eta Vijay P. Puri. Laboratory Manual in Highway Engineering. 2nd ed. New Age International, 2017.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.