Cita APA (7th ed.)

Pearson, K., & Pearson, E. S. 1. . . e. (1919). Tracts for computers. no. 1-. Printed at the University Press.

Cita Chicago (17th ed.)

Pearson, Karl, i Egon Sharpe 1895- ed Pearson. Tracts for Computers. No. 1-. Cambridge [Eng.]: Printed at the University Press, 1919.

Cita MLA (9th ed.)

Pearson, Karl, i Egon Sharpe 1895- ed Pearson. Tracts for Computers. No. 1-. Printed at the University Press, 1919.