Cita APA

Levens, A. S. (1965). Graphical methods in research. John Wiley.

Chicago Edition Citation

Levens, A. S. Graphical Methods in Research. John Wiley, 1965.

Cita MLA

Levens, A. S. Graphical Methods in Research. John Wiley, 1965.

Atenció: Aquestes cites poden no estar 100% correctes.