Cita APA (7a ed.)

Parry, G., & Williams, M. A. (1999). The Welsh language and the 1891 Census. University of Wales Press.

Cita Chicago Style (17a ed.)

Parry, Gwenfair, y Mari A. Williams. The Welsh Language and the 1891 Census. Cardiff: University of Wales Press, 1999.

Cita MLA (8a ed.)

Parry, Gwenfair, y Mari A. Williams. The Welsh Language and the 1891 Census. University of Wales Press, 1999.