APA aipamena

Christensen, L. B., & Johnson, R. B. (2011). Research methods, design, and analysis (Eleventh edition.). Pearson Education, Inc.

Chicago Style aipamena

Christensen, Larry B., and R. Burke Johnson. Research Methods, Design, and Analysis. Eleventh edition. Boston, Massachusetts: Pearson Education, Inc, 2011.

MLA aipamena

Christensen, Larry B., and R. Burke Johnson. Research Methods, Design, and Analysis. Eleventh edition. Pearson Education, Inc, 2011.