Cita APA (7a ed.)

Dahl, O. J., Hoare, C. A. R., & Dijkstra, E. W. (1981). Structured programming (9th print. ed.). [S.n.].

Cita Chicago Style (17a ed.)

Dahl, O. J., C. A. R. Hoare, y Edsger W. Dijkstra. Structured Programming. 9th print. ed. London: [S.n.], 1981.

Cita MLA (9a ed.)

Dahl, O. J., et al. Structured Programming. 9th print. ed. [S.n.], 1981.