APA (7. basım) Alıntı

Borlagdan, P. C. Design and development of a two post rotary-percussion drilling rig. Philippine Engineering Journal.

Chicago Style (17. basım) Atıf

Borlagdan, Paterno C. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal .

MLA (9th ed.) Atıf

Borlagdan, Paterno C. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal, .