APA (7th ed.) Citation

Ash, C. J., & Knight, J. (2006). Computable structures and the hyperarithmetical hierarchy. Elsevier.

Chicago Style (17th ed.) Citation

Ash, C. J., and J. Knight. Computable Structures and the Hyperarithmetical Hierarchy. Amsterdam [etc.]: Elsevier, 2006.

MLA (9th ed.) Citation

Ash, C. J., and J. Knight. Computable Structures and the Hyperarithmetical Hierarchy. Elsevier, 2006.