APA

Gaskell T. F., . (1960). Under the deep oceans: twentieth century voyages of discovery. New York: Norton.

Chicago

Gaskell Thomas Frohock, . 1960. Under the deep oceans: twentieth century voyages of discovery. New York: Norton.

Harvard

Gaskell T. F., . (1960). Under the deep oceans: twentieth century voyages of discovery. New York: Norton.

MLA

Gaskell Thomas Frohock, . Under the deep oceans: twentieth century voyages of discovery. New York: Norton. 1960.