Cita APA (7a ed.)

Stephen, L., & Young, G. W. (1936). The playground of Europe. B. Blackwell.

Cita Chicago Style (17a ed.)

Stephen, Leslie, y Geoffrey Winthrop Young. The Playground of Europe. Oxford: B. Blackwell, 1936.

Cita MLA (9a ed.)

Stephen, Leslie, y Geoffrey Winthrop Young. The Playground of Europe. B. Blackwell, 1936.