APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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