APA aipamena

Johnson, B., & Christensen, L. B. (2004). Educational research: Quantitative, qualitative, and mixed approaches (2nd ed.). Allyn and Bacon.

Chicago Style aipamena

Johnson, Burke, and Larry B. Christensen. Educational Research: Quantitative, Qualitative, and Mixed Approaches. 2nd ed. Boston: Allyn and Bacon, 2004.

MLA aipamena

Johnson, Burke, and Larry B. Christensen. Educational Research: Quantitative, Qualitative, and Mixed Approaches. 2nd ed. Allyn and Bacon, 2004.