Cita APA (7a ed.)

Russell, A. H., & Russell, E. J. (1925). Rapid calculations. Gregg Publishing Company.

Cita Chicago Style (17a ed.)

Russell, Arthur Hallett, y Edward John Russell. Rapid Calculations. London [etc.]: Gregg Publishing Company, 1925.

Cita MLA (9a ed.)

Russell, Arthur Hallett, y Edward John Russell. Rapid Calculations. Gregg Publishing Company, 1925.