APA aipamena

(1980). Guides To Good Practise. Cement and Concrete Associatio.

Chicago Style aipamena

Guides To Good Practise. Cement and Concrete Associatio, 1980.

MLA aipamena

Guides To Good Practise. Cement and Concrete Associatio, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.