Cita APA (7th ed.)

Childress, R. L. (1974). Sets, matrices, and linear programming. Prentice-Hall, Inc.

Cita Chicago (17th ed.)

Childress, Robert L. Sets, Matrices, and Linear Programming. Englewood Cliffs, N.J: Prentice-Hall, Inc, 1974.

Cita MLA (9th ed.)

Childress, Robert L. Sets, Matrices, and Linear Programming. Prentice-Hall, Inc, 1974.