Cita APA (7a ed.)

Barron, D. W. (1968). Recursive techniques in programming. Elsevier.

Cita Chicago Style (17a ed.)

Barron, David William. Recursive Techniques in Programming. New York: Elsevier, 1968.

Cita MLA (9a ed.)

Barron, David William. Recursive Techniques in Programming. Elsevier, 1968.