(1999). Manual of labour laws: Vol.2 (18th.). Law Publisher.
Chicago Style aipamenaManual of Labour Laws: Vol.2. 18th. Allahabad: Law Publisher, 1999.
MLA aipamenaManual of Labour Laws: Vol.2. 18th. Law Publisher, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.