Cita APA (7a ed.)

Heelis, F. (1912). Pitman's theory and practice of commerce: A complete guide to methods and machinery of business. Sir Isaac Pitman & Sons.

Cita Chicago Style (17a ed.)

Heelis, Frederick. Pitman's Theory and Practice of Commerce: A Complete Guide to Methods and Machinery of Business. London [etc.]: Sir Isaac Pitman & Sons, 1912.

Cita MLA (9a ed.)

Heelis, Frederick. Pitman's Theory and Practice of Commerce: A Complete Guide to Methods and Machinery of Business. Sir Isaac Pitman & Sons, 1912.