Cita APA (7th ed.)

Healey, J. F. (1993). Statistics, a tool for social research (3rd ed.). Wadsworth Pub.

Cita Chicago (17th ed.)

Healey, Joseph F. Statistics, a Tool for Social Research. 3rd ed. Belmont, Calif: Wadsworth Pub, 1993.

Cita MLA (9th ed.)

Healey, Joseph F. Statistics, a Tool for Social Research. 3rd ed. Wadsworth Pub, 1993.