Cita APA (7a ed.)

Ball, J. E. (1980). Practical problems in mathematics for mason. Delmar.

Cita Chicago Style (17a ed.)

Ball, John E. Practical Problems in Mathematics for Mason. Albany, NY: Delmar, 1980.

Cita MLA (9a ed.)

Ball, John E. Practical Problems in Mathematics for Mason. Delmar, 1980.