Citação norma APA

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.

Citação norma Chicago

Conference on Software Maintenance Sorrento, Italy, IEEE Computer Society. Software Engineering Technical Committee, Institute of Electrical and Electronics Engineers, and Software Maintenance Association. Conference on Software Maintenance 1991, October 15-17, 1991 - Sorrento, Italy: Proceedings. Los Alamitos, Calif.: IEEE Computer Society Press, 1991.

Citação norma MLA

Conference on Software Maintenance Sorrento, Italy, et al. Conference on Software Maintenance 1991, October 15-17, 1991 - Sorrento, Italy: Proceedings. IEEE Computer Society Press, 1991.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.