APA

McDowell C. E., Gibbs H. M., . (1954). Ocean transportation. New York: McGraw-Hill.

Chicago

McDowell Carl E, Gibbs Helen Marilla, . 1954. Ocean transportation. New York: McGraw-Hill.

Harvard

McDowell C. E., Gibbs H. M., . (1954). Ocean transportation. New York: McGraw-Hill.

MLA

McDowell Carl E, Gibbs Helen Marilla, . Ocean transportation. New York: McGraw-Hill. 1954.