APA (7th ed.) Citation

(1971). Degrees of unsolvability. North-Holland Pub. Co.

Chicago Style (17th ed.) Citation

Degrees of Unsolvability. Amsterdam ; London: North-Holland Pub. Co, 1971.

MLA (9th ed.) Citation

Degrees of Unsolvability. North-Holland Pub. Co, 1971.

Warning: These citations may not always be 100% accurate.