Cita APA (7a ed.)

Butler, D., & Blake, R. (1978). Coalitions in British politics. MacMillan.

Cita Chicago Style (17a ed.)

Butler, David, y Robert Blake. Coalitions in British Politics. London: MacMillan, 1978.

Cita MLA (9a ed.)

Butler, David, y Robert Blake. Coalitions in British Politics. MacMillan, 1978.