Cita APA (7a ed.)

Alford, L. P. (1924). Duplicate and interchangeable manufacture. Industrial Extension Institute.

Cita Chicago Style (17a ed.)

Alford, Leon Pratt. Duplicate and Interchangeable Manufacture. New York: Industrial Extension Institute, 1924.

Cita MLA (9a ed.)

Alford, Leon Pratt. Duplicate and Interchangeable Manufacture. Industrial Extension Institute, 1924.