JACOB,M.M. (1973). TOOL ENGINEERING. NPC.
Chicago Style aipamenaJACOB,M.M. TOOL ENGINEERING. NPC, 1973.
MLA aipamenaJACOB,M.M. TOOL ENGINEERING. NPC, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena