Cita APA (7th ed.)

Bell, D. J., & Jacobson, D. H. (1975). Singular optimal control problems. Academic Press.

Cita Chicago (17th ed.)

Bell, David J., i David H. Jacobson. Singular Optimal Control Problems. Londres: Academic Press, 1975.

Cita MLA (9th ed.)

Bell, David J., i David H. Jacobson. Singular Optimal Control Problems. Academic Press, 1975.