APA aipamena

Barnes, M. (2000). Widespan roof structures. ASCE.

Chicago Style aipamena

Barnes, Michael. Widespan Roof Structures. ASCE, 2000.

MLA aipamena

Barnes, Michael. Widespan Roof Structures. ASCE, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.