Malaysia. (1998). Operator kimpalan arka terbenam (keluli karbon) = submerged arc welding operator (carbon steel): H-029-2, juruteknik kimpalan arka terbenam (keluli karbon) = submerged arc welding technician (carbon steel) : H-029-3. Majlis Latihan Vokasional Kebangsaan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMalaysia. Operator Kimpalan Arka Terbenam (keluli Karbon) = Submerged Arc Welding Operator (carbon Steel): H-029-2, Juruteknik Kimpalan Arka Terbenam (keluli Karbon) = Submerged Arc Welding Technician (carbon Steel) : H-029-3. Putrajaya: Majlis Latihan Vokasional Kebangsaan, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMalaysia. Operator Kimpalan Arka Terbenam (keluli Karbon) = Submerged Arc Welding Operator (carbon Steel): H-029-2, Juruteknik Kimpalan Arka Terbenam (keluli Karbon) = Submerged Arc Welding Technician (carbon Steel) : H-029-3. Majlis Latihan Vokasional Kebangsaan, 1998.