APA (7th ed.) Citation

Clifford, W. K., Tucker, R., & Smith, H. J. S. (1968). Mathematical papers. Chelsea Pub. Co.

Chicago Style (17th ed.) Citation

Clifford, William Kingdon, Robert Tucker, and Henry John Stephen Smith. Mathematical Papers. Bronx, N.Y.: Chelsea Pub. Co, 1968.

MLA (8th ed.) Citation

Clifford, William Kingdon, et al. Mathematical Papers. Chelsea Pub. Co, 1968.