From the ninth to the fourteenth century.

MLA

Pounds, Norman J. G. “From the Ninth to the Fourteenth Century.” Historical Geography of Europe, vol. 1, no. 2, Jan. 1990, pp. 113–41. EBSCOhost, https://doi.org/10.1017/CBO9780511572265.009.

APA

Pounds, N. J. G. (1990). From the ninth to the fourteenth century. Historical Geography of Europe, 1(2), 113–141. https://doi.org/10.1017/CBO9780511572265.009

Chicago

Pounds, Norman J. G. 1990. “From the Ninth to the Fourteenth Century.” Historical Geography of Europe 1 (2): 113–41. doi:10.1017/CBO9780511572265.009.