Cita APA (7a ed.)

Crook, C. W. (1910). Pitman's smaller commercial arithmetic. Isaac Pitman & Sons.

Cita Chicago Style (17a ed.)

Crook, Charles Williamson. Pitman's Smaller Commercial Arithmetic. London [etc.]: Isaac Pitman & Sons, 1910.

Cita MLA (9a ed.)

Crook, Charles Williamson. Pitman's Smaller Commercial Arithmetic. Isaac Pitman & Sons, 1910.