Cruz, C. E. (2004). Where do we draw the line?. IN Business focus [column]. Manila Bulletin.
Chicago Style aipamenaCruz, Christopher E. "Where Do We Draw the Line?. IN Business Focus [column]." Manila Bulletin 2004.
MLA aipamenaCruz, Christopher E. "Where Do We Draw the Line?. IN Business Focus [column]." Manila Bulletin, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.