APA aipamena

456069 Timms, A. G., & Gries, W. E. Use of fly ash in concrete.

Chicago Style aipamena

456069 Timms, Albert G., and William E. Gries. Use of Fly Ash in Concrete.

MLA aipamena

456069 Timms, Albert G., and William E. Gries. Use of Fly Ash in Concrete.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.