APA aipamena

(1987). PCI JournalPrecast/Prestressed Concrete Institute 1987. PCI.

Chicago Style aipamena

PCI JournalPrecast/Prestressed Concrete Institute 1987. PCI, 1987.

MLA aipamena

PCI JournalPrecast/Prestressed Concrete Institute 1987. PCI, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.