APA (7th ed.) Citation

Bullen, K. E. (1975). The Earth's density. Chapman and Hall; Wiley.

Chicago Style (17th ed.) Citation

Bullen, K. E. The Earth's Density. London : New York: Chapman and Hall; Wiley, 1975.

MLA (9th ed.) Citation

Bullen, K. E. The Earth's Density. Chapman and Hall; Wiley, 1975.