APA

Singh K., . (2007). Quantitative social research methods. Los Ángeles (California, Estados Unidos): Sage Publications.

Chicago

Singh Kultar, . 2007. Quantitative social research methods. Los Ángeles (California, Estados Unidos): Sage Publications.

Harvard

Singh K., . (2007). Quantitative social research methods. Los Ángeles (California, Estados Unidos): Sage Publications.

MLA

Singh Kultar, . Quantitative social research methods. Los Ángeles (California, Estados Unidos): Sage Publications. 2007.