APA (7th ed.) Citation

Apel, S., Leich, T., & Saake, G. (2008). Aspectual Feature Modules. IEEE transactions on software engineering, 34(2), 162-180. https://doi.org/10.1109/TSE.2007.70770

Chicago Style (17th ed.) Citation

Apel, Sven, Thomas Leich, and Gunter Saake. "Aspectual Feature Modules." IEEE Transactions on Software Engineering 34, no. 2 (2008): 162-180. https://doi.org/10.1109/TSE.2007.70770.

MLA (9th ed.) Citation

Apel, Sven, et al. "Aspectual Feature Modules." IEEE Transactions on Software Engineering, vol. 34, no. 2, 2008, pp. 162-180, https://doi.org/10.1109/TSE.2007.70770.