APA aipamena

Smith, C. S., & Wikoff, H. L. (1933). The Silica Content of the Lungs of a Group of Tunnel Workers.

Chicago Style aipamena

Smith, Clayton S., and Helen L. Wikoff. The Silica Content of the Lungs of a Group of Tunnel Workers. 1933.

MLA aipamena

Smith, Clayton S., and Helen L. Wikoff. The Silica Content of the Lungs of a Group of Tunnel Workers. 1933.