Borlagdan, P. C. Design and development of a two post rotary-percussion drilling rig. Philippine Engineering Journal.
Chicagoスタイル(17版)引用形式Borlagdan, Paterno C. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal .
MLA(9版)引用形式Borlagdan, Paterno C. "Design and Development of a Two Post Rotary-percussion Drilling Rig." Philippine Engineering Journal, .
警告: この引用は必ずしも正確ではありません.