APA (7th ed.) Citation

Speck, F. G., Skinner, A., Butler, E. L., Sapir, E., & Voegelin, C. F. (1918). Algonquian materials, Frank G. Speck Papers.

Chicago Style (17th ed.) Citation

Speck, Frank G., Alanson Skinner, Eva L. Butler, Edward Sapir, and C. F. Voegelin. Algonquian Materials, Frank G. Speck Papers. 1918.

MLA (9th ed.) Citation

Speck, Frank G., et al. Algonquian Materials, Frank G. Speck Papers. 1918.