APA (7th ed.) Citation

Cassidy, V. H. (1968). The sea around them: The Atlantic Ocean, A.D. 1250. Louisiana State University Press.

Chicago Style (17th ed.) Citation

Cassidy, Vincent H. The Sea Around Them: The Atlantic Ocean, A.D. 1250. Baton Rouge: Louisiana State University Press, 1968.

MLA (9th ed.) Citation

Cassidy, Vincent H. The Sea Around Them: The Atlantic Ocean, A.D. 1250. Louisiana State University Press, 1968.