Macdowell, C. E., & Gibbs, H. M. (1959). Ocean Transprortation. McGraw Hill.
Chicago Edition CitationMacdowell, Cart E., i Helen M. Gibbs. Ocean Transprortation. New York: McGraw Hill, 1959.
Cita MLAMacdowell, Cart E., i Helen M. Gibbs. Ocean Transprortation. McGraw Hill, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.