APA (7th ed.) Citation

Porter, A., Siy, H., & Mockus, A. (1998). Understanding the sources of variation in software inspections. ACM Transactions on Software Engineering & Methodology, 7, 41. https://doi.org/10.1145/268411.268421

Chicago Style (17th ed.) Citation

Porter, Adam, Harvey Siy, and Audris Mockus. "Understanding the Sources of Variation in Software Inspections." ACM Transactions on Software Engineering & Methodology 7 (1998): 41. https://doi.org/10.1145/268411.268421.

MLA (9th ed.) Citation

Porter, Adam, et al. "Understanding the Sources of Variation in Software Inspections." ACM Transactions on Software Engineering & Methodology, vol. 7, 1998, p. 41, https://doi.org/10.1145/268411.268421.