McManus. (1999). Safety & Health in Confined Spaces. Lewis Pub.
Chicago Style aipamenaMcManus. Safety & Health in Confined Spaces. Boca Raten: Lewis Pub, 1999.
MLA aipamenaMcManus. Safety & Health in Confined Spaces. Lewis Pub, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.