Cita APA (7th ed.)

Beins, B., & McCarthy, M. (2012). Research methods and statistics. Pearson Education,Inc.

Cita Chicago (17th ed.)

Beins, Bernard, i Maureen McCarthy. Research Methods and Statistics. Upper Saddle River, NJ: Pearson Education,Inc, 2012.

Cita MLA (9th ed.)

Beins, Bernard, i Maureen McCarthy. Research Methods and Statistics. Pearson Education,Inc, 2012.