APA (7th ed.) Citation

Smith, D. D. (1909). The sources, distribution and relative importance of the dual life in human teeth. s.n..

Chicago Style (17th ed.) Citation

Smith, D. D. The Sources, Distribution and Relative Importance of the Dual Life in Human Teeth. [Philadelphia: s.n., 1909.

MLA (9th ed.) Citation

Smith, D. D. The Sources, Distribution and Relative Importance of the Dual Life in Human Teeth. s.n., 1909.