APA aipamena

(1988). Spon's International Construction Costs Handbook. E.&f.N.Spon.

Chicago Style aipamena

Spon's International Construction Costs Handbook. E.&f.N.Spon, 1988.

MLA aipamena

Spon's International Construction Costs Handbook. E.&f.N.Spon, 1988.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.