ASHWORTH, A. (1996). Contractual Procedures In The Construction Industry. Addison Wesley Longman.
Chicago Style aipamenaASHWORTH, Allan. Contractual Procedures In The Construction Industry. Addison Wesley Longman, 1996.
MLA aipamenaASHWORTH, Allan. Contractual Procedures In The Construction Industry. Addison Wesley Longman, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.