APA (7th ed.) Citation

Hartmanis, J., & Hemachandra, L. (1986). Complexity classes without machines: On complete languages for UP.

Chicago Style (17th ed.) Citation

Hartmanis, Juris, and Lane Hemachandra. Complexity Classes Without Machines: On Complete Languages for UP. Ithaca, New York, 1986.

MLA (9th ed.) Citation

Hartmanis, Juris, and Lane Hemachandra. Complexity Classes Without Machines: On Complete Languages for UP. 1986.

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