APA (7. basım) Alıntı

Gregorio, E. G. (1980). A practical guide to irrigation canal design. Philippine Engineering Journal.

Chicago Style (17. basım) Atıf

Gregorio, Enrico G. "A Practical Guide to Irrigation Canal Design." Philippine Engineering Journal 1980.

MLA (9th ed.) Atıf

Gregorio, Enrico G. "A Practical Guide to Irrigation Canal Design." Philippine Engineering Journal, 1980.