Cita APA (7th ed.)

Dijkstra, E. W. (1990). Formal development of programs and proofs. Addison-Wesley.

Cita Chicago (17th ed.)

Dijkstra, Edsger Wybe. Formal Development of Programs and Proofs. Reading, Mass: Addison-Wesley, 1990.

Cita MLA (9th ed.)

Dijkstra, Edsger Wybe. Formal Development of Programs and Proofs. Addison-Wesley, 1990.