APA aipamena

Craig, R. (1980). Steam tramps and cargo liners: :1850 -1950. Her majesty's stationery office.

Chicago Style aipamena

Craig, Robin. Steam Tramps and Cargo Liners: :1850 -1950. London: Her majesty's stationery office, 1980.

MLA aipamena

Craig, Robin. Steam Tramps and Cargo Liners: :1850 -1950. Her majesty's stationery office, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.