Citace podle APA (7th ed.)

Borlagdan, P. (1995). Design and development of a two post rotary-percussion drilling rig. Philippine Engineering Journal.

Citace podle Chicago (17th ed.)

Borlagdan, Paterno. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal 1995.

Citace podle MLA (9th ed.)

Borlagdan, Paterno. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal, 1995.

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