APA (7th ed.) Citation

Niggl, K. (2005). Control structures in programs and computational complexity. Annals of Pure and Applied Logic, 133, 247. https://doi.org/10.1016/j.apal.2004.10.011

Chicago Style (17th ed.) Citation

Niggl, Karl-Heinz. "Control Structures in Programs and Computational Complexity." Annals of Pure and Applied Logic 133 (2005): 247. https://doi.org/10.1016/j.apal.2004.10.011.

MLA (9th ed.) Citation

Niggl, Karl-Heinz. "Control Structures in Programs and Computational Complexity." Annals of Pure and Applied Logic, vol. 133, 2005, p. 247, https://doi.org/10.1016/j.apal.2004.10.011.