Burke, Peter (2020), Kivisto, Peter, 편집., “Identity”, 《The Cambridge Handbook of Social Theory: Volume 2: Contemporary Theories and Issues》 (Cambridge University Press) 2, 63–78쪽, doi:10.1017/9781316677452.005, ISBN978-1-107-16269-3, S2CID242711319, Within identity theory, an identity is a set of meanings defining who one is in a role (e.g., father, plumber, student), in a group or social category (e.g., member of a church or voluntary association, an American, a female), or a unique individual (e.g., a highly moral person, an assertive person, an outgoing person)
Weinreich, Peter (1986). 〈14: The operationalisation of identity theory in racial and ethnic relations〉. Rex, John; Mason, David. 《Theories of Race and Ethnic Relations》. Comparative Ethnic and Race Relations. Cambridge: Cambridge University Press (1988에 출판됨). 299ff쪽. ISBN9780521369398. 2018년 8월 30일에 확인함.
Compare Collins Dictionary of Sociology, quoted in Covington, Peter (2008). 〈Culture and Identity〉. 《Success in Sociology》. Dublin: Folens Limited. 12쪽. ISBN9781850082606. 2020년 11월 12일에 확인함. Jary and Jary (1991) define identity as 'a sense of self that develops as the child differentiates from parents and the family, and takes a place in society.'