APA aipamena

OSTWALD, P. F. (1984). Cost Estimating Philip F. Ostwald. Prentice-Hall.

Chicago Style aipamena

OSTWALD, Philip F. Cost Estimating Philip F. Ostwald. Prentice-Hall, 1984.

MLA aipamena

OSTWALD, Philip F. Cost Estimating Philip F. Ostwald. Prentice-Hall, 1984.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.