APA

Carnell P. W., . (1979). Ballads in the Charles Harding Firth collection of the University of Sheffield. Sheffield: The Centre for English Cultural Tradition and Language, University of Sheffield.

Chicago

Carnell Peter W, . 1979. Ballads in the Charles Harding Firth collection of the University of Sheffield. Sheffield: The Centre for English Cultural Tradition and Language, University of Sheffield.

Harvard

Carnell P. W., . (1979). Ballads in the Charles Harding Firth collection of the University of Sheffield. Sheffield: The Centre for English Cultural Tradition and Language, University of Sheffield.

MLA

Carnell Peter W, . Ballads in the Charles Harding Firth collection of the University of Sheffield. Sheffield: The Centre for English Cultural Tradition and Language, University of Sheffield. 1979.