APA (7th ed.) Citation

Thornton, R. H. (1959). British shipping / by R.H. Thornton (2nd ed.). C.U.P..

Chicago Style (17th ed.) Citation

Thornton, R. H. British Shipping / by R.H. Thornton. 2nd ed. C.U.P., 1959.

MLA (9th ed.) Citation

Thornton, R. H. British Shipping / by R.H. Thornton. 2nd ed. C.U.P., 1959.

Warning: These citations may not always be 100% accurate.