APA

Study of Parliament Group, Walkland S. A., . (1979). The House of Commons in the twentieth century. Oxford: Clarendon Press.

Chicago

Study of Parliament Group, Walkland S A, . 1979. The House of Commons in the twentieth century. Oxford: Clarendon Press.

Harvard

Study of Parliament Group, Walkland S. A., . (1979). The House of Commons in the twentieth century. Oxford: Clarendon Press.

MLA

Study of Parliament Group, Walkland S A, . The House of Commons in the twentieth century. Oxford: Clarendon Press. 1979.