APA aipamena

McDowell, C. E. Ocean transportation. McGraw-hill book company inc.

Chicago Style aipamena

McDowell, Carl E. Ocean Transportation. McGraw-hill book company inc.

MLA aipamena

McDowell, Carl E. Ocean Transportation. McGraw-hill book company inc.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.