APA (7th ed.) Citation

Gaskell, T. F. (1967). The earth's mantle. Academic Press.

Chicago Style (17th ed.) Citation

Gaskell, Thomas Frohock. The Earth's Mantle. London, New York: Academic Press, 1967.

MLA (9th ed.) Citation

Gaskell, Thomas Frohock. The Earth's Mantle. Academic Press, 1967.

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