Cita APA (7a ed.)

Healey, J. F. (2002). Statistics: A tool for social research (6th ed.). Wadsworth.

Cita Chicago Style (17a ed.)

Healey, Joseph F. Statistics: A Tool for Social Research. 6th ed. Belmont: Wadsworth, 2002.

Cita MLA (8a ed.)

Healey, Joseph F. Statistics: A Tool for Social Research. 6th ed. Wadsworth, 2002.

Precaución: Estas citas no son 100% exactas.