APA Style

Johnson, B., Christensen, L, B. (2019). Educational research: quantitative, qualitative, and mixed approaches (7th.ed). Thousand Oaks, California: SAGE Publications, Inc.,.

MLA Style

Johnson, Burke., Christensen, Larry, B.,. "Educational research: quantitative, qualitative, and mixed approaches". 7th.ed Thousand Oaks, California: SAGE Publications, Inc.,, 2019. PDF.