APA aipamena

Shoenfield, J. R. (1972). Degrees of unsolvability. North-Holland Pub. Co.; American Elsevier.

Chicago Style aipamena

Shoenfield, Joseph R. Degrees of Unsolvability. Amsterdam, New York: North-Holland Pub. Co.; American Elsevier, 1972.

MLA aipamena

Shoenfield, Joseph R. Degrees of Unsolvability. North-Holland Pub. Co.; American Elsevier, 1972.