Babbie, E., The Practice of Social Research, 10th edition, Wadsworth, Thomson Learning Inc., ISBN 0-534-62029-9
Social Democratic Party of Germany | Social Democratic Party | social media | The Social Network | Richter magnitude scale | Social Democrats | Social Security Administration | Social Democratic Party (UK) | social democracy | Swedish Social Democratic Party | Social Distortion | Chinese Academy of Social Sciences | Social Democrat Radical Party | social | Catholic social teaching | Social democracy | Faculty of Humanities and Social Sciences, University of Zagreb | Broken Social Scene | Social Security | Social Science Research Council | Economic and Social Research Council | social network | Social Democratic Party of Austria | Social Security (United States) | Social Democratic Party (Portugal) | Social learning theory | Social Democratic Party (Romania) | Social class | scale | Moment magnitude scale |