(ASA Style Guide 2014 section 4.3.2 p. 54-55, and appendix p. 112)
(Author Last name Year of publication)
Author Last name, First name. Year of publication. "Title of Publication." PhD dissertation, Department of Study, University of. Retrieved from Database, record number.
Kroll, Christian. 2011. "Towards a sociology of happiness: examining social capital and subjective well-being across subgroups of society." PhD dissertation, Department of Sociology, The London School of Economics and Political Science. Retrieved from LSE, record 169.