Cita APA (7a ed.)

Roper, H. (1959). Catholic Landmarks in London. Campion Press Ltd.

Cita Chicago Style (17a ed.)

Roper, Harold. Catholic Landmarks in London. London-Dublin: Campion Press Ltd, 1959.

Cita MLA (9a ed.)

Roper, Harold. Catholic Landmarks in London. Campion Press Ltd, 1959.