Cita APA (7th ed.)

Clarence, S. M., & McDonnell, W. H. Contemporary progress in mathematics 6. ill.

Cita Chicago (17th ed.)

Clarence, Sister Mary, i W H. McDonnell. Contemporary Progress in Mathematics 6. New York: ill.

Cita MLA (9th ed.)

Clarence, Sister Mary, i W H. McDonnell. Contemporary Progress in Mathematics 6. ill.