Cita APA (7a ed.)

Sin autor. (1991). Object-oriented modeling and design. [S.n.].

Cita Chicago Style (17a ed.)

Sin autor. Object-oriented Modeling and Design. Englewood Cliffs: [S.n.], 1991.

Cita MLA (9a ed.)

Sin autor. Object-oriented Modeling and Design. [S.n.], 1991.