Cita APA (7th ed.)

DUCKWORTH, W. (1968). Statistical techniques in technological research: An aid to research productivity. Methuen.

Cita Chicago (17th ed.)

DUCKWORTH, W.E. Statistical Techniques in Technological Research: An Aid to Research Productivity. London: Methuen, 1968.

Cita MLA (9th ed.)

DUCKWORTH, W.E. Statistical Techniques in Technological Research: An Aid to Research Productivity. Methuen, 1968.