APA (7th ed.) Citation

Korec, I., & Calude, C. Theories of computational complexity.

Chicago Style (17th ed.) Citation

Korec, Ivan, and Cristian Calude. Theories of Computational Complexity.

MLA (9th ed.) Citation

Korec, Ivan, and Cristian Calude. Theories of Computational Complexity.

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