Style de citation APA

Wolfram, H., Wood, I. N., & Eldeveik, J. (2001). The creation of the Carolingian frontier System c. 800. The transformation of frontiers, 233.

Style de citation Chicago

Wolfram, Herwig, Ian N. Wood, et John Eldeveik. "The Creation of the Carolingian Frontier System C. 800." The Transformation of Frontiers 2001: 233.

Style de citation MLA

Wolfram, Herwig, et al. "The Creation of the Carolingian Frontier System C. 800." The Transformation of Frontiers, 2001, p. 233.