Cita APA (7th ed.)

HEALEY JOSEPH F. (1999). STATISTICS: A TOOL FOR SOCIAL RESEARCH (5TH.). INTERNATIONAL THOMSON BUSINESS PRESS.

Cita Chicago (17th ed.)

HEALEY JOSEPH F. STATISTICS: A TOOL FOR SOCIAL RESEARCH. 5TH. BOSTON: INTERNATIONAL THOMSON BUSINESS PRESS, 1999.

Cita MLA (9th ed.)

HEALEY JOSEPH F. STATISTICS: A TOOL FOR SOCIAL RESEARCH. 5TH. INTERNATIONAL THOMSON BUSINESS PRESS, 1999.