Cita APA

Sacks, G. E., & Sacks, G. E. (1963). Degrees of unsolvability. Princeton, N.J.: Princeton University Press.

Citación estilo Chicago

Sacks, Gerald E., y Gerald E. Sacks. Degrees of Unsolvability. Princeton, N.J.: Princeton University Press, 1963.

Cita MLA

Sacks, Gerald E., y Gerald E. Sacks. Degrees of Unsolvability. Princeton, N.J.: Princeton University Press, 1963.