Gaya APA

MKKK, A, P, M, S. (1997). SAFETY IN GAS WELDING CUTTING AND SIMILAR PROCESSES . USA: HSE.

Gaya MLA

MKKK, AMIROEL, PRIBADI, MADOERETNO, SKM,. "SAFETY IN GAS WELDING CUTTING AND SIMILAR PROCESSES". USA: HSE, 1997. Text.