APA-Zitierstil (7. Ausg.)

Downey, R. G., & Greenberg, N. (2020). A hierarchy of Turing degrees: A transfinite hierarchy of lowness notions in the computably enumerable degrees, unifying classes, and natural definability. The MIT Press.

Chicago-Zitierstil (17. Ausg.)

Downey, R. G., und Noam Greenberg. A Hierarchy of Turing Degrees: A Transfinite Hierarchy of Lowness Notions in the Computably Enumerable Degrees, Unifying Classes, and Natural Definability. Cambridge, Massachusetts: The MIT Press, 2020.

MLA-Zitierstil (9. Ausg.)

Downey, R. G., und Noam Greenberg. A Hierarchy of Turing Degrees: A Transfinite Hierarchy of Lowness Notions in the Computably Enumerable Degrees, Unifying Classes, and Natural Definability. The MIT Press, 2020.