Cita APA (7th ed.)

Berry, W. D. (1993). Understanding Regression Assumptions (Ist ed.). SAGE.

Cita Chicago (17th ed.)

Berry, William D. Understanding Regression Assumptions. Ist ed. New Delhi.: SAGE, 1993.

Cita MLA (9th ed.)

Berry, William D. Understanding Regression Assumptions. Ist ed. SAGE, 1993.