Luth, F. A., & Kokes, R. J. Planning of Iron and Steel Works.
Chicago Style aipamenaLuth, Friedrich A.K, and Richard J. Kokes. Planning of Iron and Steel Works.
MLA aipamenaLuth, Friedrich A.K, and Richard J. Kokes. Planning of Iron and Steel Works.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.