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 Style (17. basım) AtıfDowney, R. G., ve 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 (9th ed.) AtıfDowney, R. G., ve 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.
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