Conference on Software Maintenance Sorrento, Italy, IEEE Computer Society. Software Engineering Technical Committee, Institute of Electrical and Electronics Engineers, & Software Maintenance Association. (1991). Conference on Software Maintenance 1991, October 15-17, 1991 - Sorrento, Italy: Proceedings. IEEE Computer Society Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিConference on Software Maintenance Sorrento, Italy, IEEE Computer Society. Software Engineering Technical Committee, Institute of Electrical and Electronics Engineers, এবং Software Maintenance Association. Conference on Software Maintenance 1991, October 15-17, 1991 - Sorrento, Italy: Proceedings. Los Alamitos, Calif.: IEEE Computer Society Press, 1991.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিConference on Software Maintenance Sorrento, Italy, et al. Conference on Software Maintenance 1991, October 15-17, 1991 - Sorrento, Italy: Proceedings. IEEE Computer Society Press, 1991.