APA (7th ed.) Citation

Clapp, E. J. (1911). The port of Hamburg. Yale university press; H. Frowde, Oxford university press.

Chicago Style (17th ed.) Citation

Clapp, Edwin J. The Port of Hamburg. New Haven : London: Yale university press; H. Frowde, Oxford university press, 1911.

MLA (9th ed.) Citation

Clapp, Edwin J. The Port of Hamburg. Yale university press; H. Frowde, Oxford university press, 1911.