Cita APA (7th ed.)

Hughes, J. K. (1977). A structured approach to programming. Prentice-Hall.

Cita Chicago (17th ed.)

Hughes, Joan Kirkby. A Structured Approach to Programming. Englewood Cliffs, N.J: Prentice-Hall, 1977.

Cita MLA (9th ed.)

Hughes, Joan Kirkby. A Structured Approach to Programming. Prentice-Hall, 1977.